iPad3 and enterprise

It's definitely getting there, but it's still not quite enterprise-ready

19 Mar 2012 :  So, the "new" iPad has gone on sale and appears to have excited the ‘fanbois' in the usual manner, but what about the enterprise audience?
But let's get something out of the way-this is the third iPad iteration to hit the streets, so let's just be bold here and call it the iPad 3 so we know which one we are talking about.

Well, the enterprise question goes a back a little into the recent history of Apple and the late Steve Jobs. As Apple moved further towards the consumer market with the likes of the iPod and the iPhone, less and less attention was focussed on the professional market, that is people who were using Apple kit in industrial, not just commercial, settings.
The Apple Xserve line of rack mount servers were capable bits of kit but never seemed to get the development that they deserved. This may have been a commercial decision due to declining revenues as demand fell, but the argument from many was that the reason demand fell was because of lack of development. Either way, enterprise rejection of Apple products seemed to set Jobs against enterprise as a focus in general. In November of 2010, Xserve was confirmed as being discontinued as a product line to be replaced by the Mac Pro, a desktop machine which itself is criticised for a lack of development.
The attitude of ignoring enterprise seemed firmly set in Apple when the iPad was first released as there were few nods in its original design or operating system (OS) that would lend it to easy integration with enterprise IT systems.
Though the iPad now enjoys many of the features thought to be a minimum standard for enterprise, many of these were later additions to iOS. Apple provides a good outline of these features here.
So with what can only be described as a grudging attitude to enterprise readiness in iPad development, where does the iPad 3 sit? 
Well, full encryption, VPN implementations and over the air kill options are certainly useful, there is still some way to go in terms of fleet management. Apple offers its own Mobile Device Management (MDM) system, but unlike most of its competitors, it requires a special security certificate to work. The process for acquiring and implementing these certificates was deeply criticised in the past which led to Apple refining and improving the process late last year, perhaps in anticipation of the iPad 3 launch. 
There are also a number of third party options out there, but again there have been criticisms that these are not as fully featured as more mainstream products, which one could take to mean those that manage Windows devices, mobile or otherwise.
There is of course a way around all of this, and that is to simply use it as an access device through a virtual desktop infrastructure (VDI). Citrix and VMware both offer solutions whereby a virtual desktop of almost any OS can be  accessed on an iPad. In fact, Citrix does a rather impressive demonstration whereby the Acer Aspire 5735 Battery is pulled from a laptop running Windows 7, only for the desktop to reappear moments later on an iPad, fully intact.
However, for those who have not yet implemented a VDI or similar, there is something of a conundrum. While the new A5X processor was not the quad-core that many had hoped for, it is still a significant performance boost over the previous iPad. The graphics power has also increased significantly, which, in conjunction with the new Retina display, has many data and business analysts salivating at the possibilities for displaying complex data. The Acer Aspire 5733 Battery life has also had a boost, as it now uses a laptop level Olympus c750 Battery, offering in the region of 1200mAh.
Forrestor's Ted Schadler was one analyst who said that such features would certainly make the device more attractive in enterprise where ever more resource hungry applications were in use.
Overall then, the iPad 3 is probably the best iPad iteration to have in enterprise, combining as it does the power boost and the extra Canon Digital Ixus v3 Battery life, but while concerns remain around management and security, whether well founded or not, it may remain the grudging addition that its predecessors were to the enterprise fleet of devices.
With Android making strides in terms of hardware combinations and OS development, the price and complexity of deployment and management for the iPad may not make mass enterprise adoption any greater a prospect for the iPad 3 than was seen for its predecessors.

What Do You Get With an Ultrabook?

A new category of thin and light Windows 7 laptops called ultrabooks has emerged in the past few months, but questions remain about whether the time is ripe to buy or to wait for Windows 8 models with features like touchscreens.
The initial ultrabooks resemble Apple's MacBook Air, and models are already available from Hewlett-Packard, Dell, Acer and Lenovo. The first ultrabooks are thinner and lighter than standard laptops, but are expensive with prices starting at US$800.
But as the biggest backer of ultrabooks, Intel has said starting prices of the devices will drop to $699 by the end of the year. The company also hopes future ultrabooks will blur the lines between laptops and tablets with features like touchscreens, long Dell Inspiron 14r Battery life, always-on connectivity and voice recognition capabilities.
A few prototype ultrabooks with touchscreens, like Lenovo's IdeaPad Yoga, were shown earlier this year at the Consumer Electronics Show in Las Vegas. Yoga turns into a tablet by flipping the screen backward, and users can take advantage of the touch interface in Microsoft's upcoming Windows 8. The ultrabook will ship later this year.
Apple's MacBook Air has proven that buyers are willing to pay a premium for thin and light laptops, and Intel hopes ultrabooks get the same response. The Intel-dominated PC market has weakened as people gravitate toward tablets with processors designed by ARM, which is also looking to enter the PC market. Intel has virtually no presence in the tablet market.
To unmask some of the mysteries surrounding ultrabooks, I took a test unit of Lenovo's IdeaPad U300S for an extended whirl. With a starting price of over $1,000, the price won't please buyers, but the ultrabook provided a peek into the future of Windows laptops.
Lenovo's U300S was extremely thin, with a generous 13.3-inch screen. It can be held by one hand and fits into a bag designed to hold smaller laptops. Ultrabooks have to meet certain design criteria set by Intel, including not being more than 21 millimeters thick (0.8 inches).
The ultrabook came with a solid-state drive, and the Windows 7 OS booted in just over 10 seconds. Ultrabooks like Hewlett-Packard's Folio 13 come with a hard-drive option, but an SSD component on the motherboard enables a fast OS boot. The U300S came back from sleep mode almost instantly, a significant improvement from past laptops I have used.
The ultrabook has a 17-watt variant of a Core i7 processor based on the Sandy Bridge microarchitecture. Applications loaded quickly and casual shooter games ran without losing frames. The laptop's battery life was between six and eight hours on active usage, similar to my current ThinkPad X220 laptop with a 35-watt Core i5 chip. The similar Acer aspire 5738z battery life may have been due to X220's smaller 12.5-inch screen and the ability for Intel chips to shut down inactive cores.
The chiclet keyboard made typing easy, and the ultrabook ran cooler than the X220. The U300S had standard laptop features such as USB 3.0 and HDMI (high-definition multimedia interface) ports, though the display was not as sharp as IPS screens found on some X220 models.
Overall, if you immediately need a lightweight laptop and can shell out more than $800, ultrabooks could be worth looking at. But for those willing to wait, the next phase of ultrabooks coming out later this year could either be cheaper or have features like touchscreens.
The first phase of ultrabooks highlights the thin and light design and "ultraresponsiveness," said Becky Emmett, an Intel spokeswoman. It also provides a foundation on which the company can engineer its second wave of ultrabooks, which will be faster and more user-friendly, Emmett said.
The next phase of ultrabooks will have new Core processors based on the upcoming Ivy Bridge microarchitecture, which will speed up programs and graphics. The chips will have 3D transistors, which will make the processors faster and power-efficient.
A third phase of ultrabooks will follow in 2013, with Intel chips code-named Haswell, Emmett said. The acer laptop battery life should improve significantly with Haswell, Emmett said.

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USB battery charging: it’s harder than it looks

As the USB port becomes increasingly ubiquitous, it is also becoming accepted as a universal charging port. Unfortunately, this concept of universal is easier to say than it is to do. This article is an introduction into the common challenges a designer runs into in creating this highly desirable, omnipresent USB charging port.

Why is this taking so long?
So, what does it mean to provide a "fast" charge?  This usually boils down to customer expectations. The common example is, “I charge my phone, MP3 player …fill in blank, in x hours at home, but at work, with my laptop, with my monitor, with my new adaptor…fill in blank, it takes all day to charge!” 
So we start with the "native" charger that comes with any device. This charging experience is the baseline for customer satisfaction.
The native wall charger for a device will very often have a special signature on the data pins to let a device know it is safe to charge with more current. In some cases, it also prevents the device from charging at all if the host is unknown. This signature may come in the form of a specific voltage placed on D+, or D-, or both.
Refer to Figure 1, which illustrates a common architecture for a wall charger using this methodology. Note that these configurations are implemented so the manufacturer can sell more accessories.

 

Figure 1 - Common architecture for a wall charger

(Click here to enlarge schematic.)

Make no mistake: selling specialized accessories is definitely in the business plan for a portable product. For every chargeable product purchased, about 50% of us will go out and buy another charger. The reason is simple: we do not like carrying them around, so we leave a charger in the other places we frequent, such as in our office or in the car.

What is the "right" charging current? (Hint:  There may be three!)
To begin an analysis of USB charging, you first need a system to help measure the current on Vbus and to measure and apply voltages on D+ and D-. This can be done by creating a board that both the peripheral and the host can plug into while exposing their D+, D+ and Vbus lines for analysis.
Jumping ahead, it is time to evaluate the charging current with a device connected via your interposer board. So let’s assume we are all smart enough to determine what voltage the native charge places on D+ and D- and we recreate a discrete charging circuit to confirm our suspicions. We then apply the right voltages, just like the native charger on D+ and D-, but the charging current is not matching our previous results.
It is time to check your power. No, not just whether things are plugged in, but the level of power. Battery-power level plays a key role in charging. Many of us who have worked on cell-phone designs can tell you that a deeply discharged lithium-ion pavilion dv8000 battery needs to be trickle charged before the real charging can start.
This, too, complicates knowing whether you have an optimal charging current. The peripheral that gets plugged into a USB port may have several different points of charging before it is full. It most likely has a low-charging mode for the aforementioned trickle charging. It also may have a different charging state for when the Dell vostro 1400 battery is nominally charged. Finally, it may have a charging state for a fully charged battery.
As a result, you will need to observe what the charging current is when a) a given device’s battery for dell inspiron 1545 is empty, b) when it is midway charged, and c) when it is fully charged. Sound time consuming?  You bet it is, but it is a necessary evil for complete characterization.

Can I have the kitchen sink, too?
We now have a growing understanding for customer charger configurations and what we would like to be seeing for charging current. For many applications (such as PC, monitor, docking station), you may want fast charging and the ability to transfer data at the same time.
In this regard, there has been a lot of confusion as to what is possible. The reason for this goes back to the fact that many native chargers place a voltage on the D+ and D- pins of the USB port. Since traditional data communication on the USB is based on 3.3V for USB1.1 and 300mV for USB 2.0, putting a different voltage on these lines eliminates the possibility for enumeration and communication.
There are some exceptions to this rule. For instance, there are devices which require you to download device-specific software to your host when you first plug the device into the USB port. Some cell phones are like this for syncing purposes, and now some facilitate charging at a higher current while communicating. So for device communication and charging, we may be limited by what the device will allow given a specific software driver.
But all is not lost and there is help on the way. A recent specification has been created to help with this data plus charging challenge: it is the USB-IF HP Compaq business notebook 6715b battery Charging Specification revision 1.2 (BC1.2) and the full specification can be found at http://www.battery-store.co.uk/ .
This specification was created to try to unify battery-charging attributes for USB 2.0 in the future. The idea was to minimize the number of cell-phone chargers ending up in landfills, by converging on one USB-charging specification. The European Union has been an early adopter to the notion of less waste. Specifically, they have committed using the same microUSB connectors on data-enabled cell phones, but they have yet to fully adopt the BC1.2 specification.
In the BC 1.2 specification, there is a mode referred to as Charging Downstream Port (CDP) that allows for data and higher charging currents. If a voltage between 0.4V and 0.8V is sensed on D+ of a host or hub device, then D- should respond with 0.5V to 0.7V.
More details of timing associated with this specification that can be found in the specification. Once CDP has been established, peripheral devices are allowed to draw up to 1.5A and simultaneously communicate data. Devices with this technology, including cell phones, should be showing up this year.

Far from simple
In summary, the USB port has infiltrated our life for providing power and we need to be intelligent if we want to be the provider of this power. Hopefully, this primer on USB charging should help you from going down many of the dark alleys in which our colleagues get stuck.

About the Author
Mitch Polonksy is the director of product marketing for analog products and technology at SMSC (Hauppauge, New York). Prior to his role at SMSC, Mitch was in marketing at Motorola. He holds a BA in mathematics form Emory University, an MSEE from Georgia Institute of Technology and an MBA from Arizona State University’s W.P. Carey School of Business.

Test suggests iPhone battery issue not a hardware problem

According to research carried out for me by an iPhone app developer, the vaio vgn-sz55gn/b battery issue that some iPhone 4 and 4S owners are experiencing is not, as some have suggested, related to the hardware.

The developer, who at this point wishes to remain anonymous, approached me late last week to discuss the issues he was experiencing with one of his two iPhone 4S handset. The problem he was seeing was pretty much along the lines of what others are reporting - rapid drop in Dell xps m1330 battery when the handset is doing little or nothing.

Nothing new there, but what I thought was interesting was that he had two handsets, one that was displaying the battery problem that some people are screaming about, and another that wasn’t. He admitted that the two handsets were very different in their configuration and had different apps installed. One was a test bed for apps he develops, the other was his day-to-day use handset. It was his day-to-day handset that was displaying the battery for Dell Inspiron 1501  problems.

Both handsets were bought at the same time (direct from Apple for delivery on launch day), both are connected to the same network (AT&T) and both handsets are now running iOS 5.0.1. This to me was strong evidence to suggest that the problem affecting iPhone handsets was not a hardware issue. However, so that we could totally rule out this being a hardware problem the developer took things a step further. He factory reset both handsets and then recovered them from a backup. However, rather than reloading them with their original backup, he swapped them over. He reloading his day-to-day handset with the backup from his development handset, and loaded the development handset with the backup from his regular day-to-day handset.

Would the Dell Vostro 1400 battery problem stay with a specific handset or swap over with the software?

The problem jumped handsets. Now the handset that was his development test bed (but loaded with the apps and settings from his day-to-day handset) is displaying the battery drain problem. The other handset (the one that was displaying the problem), is showing excellent Dell Inspiron 6400 AC Adapter battery life.

Note: This is a sample of one so bear that in mind. Ideally I’d like to try this with multiple handsets, but I don’t have access to armloads of iPhones.

The problem, it seems, is down to software. What exactly (whether it’s an app or set of apps, or a setting somewhere), we’re still not sure. However, I am now convinced that this problem ISN’T a hardware issue and will eventually be fixed by a software update.

Sidenote: As an aside, I think that iOS 5.0.1 has introduced the battery bug to my iPhone 4. Typically the handset would drop about 3 - 4% Dell inspiron 1545 Battery capacity overnight (around 7 hours). Since installing iOS 5.0.1 I’ve noticed a much bigger drop of around 15 - 20% with no change in how I’m using the handset. I’ll keep a closer eye on this over the next few days and see if the pattern holds true.

How to Buy a Point-and-Shoot Digital Camera

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By far the largest segment of the digital camera market, point-and-shoot models are compact, easy to use, and typically take great pictures with minimal effort. You simply press the shutter button, and the camera automatically adjusts shutter speed, aperture, focus, and light sensitivity to capture a clear image with optimal color. Unlike Digital SLRs which offer larger image sensors, more manual control and interchangeable lenses, point-and-shoot cameras can often slip into a pocket, and are typically less expensive.
Deciding to buy a point-and-shoot camera is the simple part, but with hundreds of models with varying price points and feature sets to choose from, selecting the best one is no easy feat. Follow these rules to find the right compact digital camera.
Rule #1: There's More to a Photo Than Megapixels
"That camera looks great, how many megapixels does it have?" This is a question I've heard time and time again, but the truth is that more megapixels don't make for better photos. A decade ago, when cameras were making the jump from 2-3 megapixels to 4-5, it was a matter of discussion. But now, with point-and-shoots starting in the 10-megapixel range and climbing as high as 16 megapixels, it's a moot point. Very few of us are going to make prints large enough to take advantage of all those extra pixels.
Sensor size is much more important. Putting too many pixels on the smaller image sensors (which are generally 1/2.3" when measured diagonally) found in compact cameras, can actually hurt camera a camera's low-light shooting performance. These sensors are much smaller than those found in D-SLRs, which can make color gradations less smooth, and make it more difficult to create a shallow depth of field. But the advantage is the ability to put lenses with longer zoom factors in compact packages—you can find a camera with an 18x lens that can fit into your shirt pocket like the NIKON EN-EL14 , something that no D-SLR can match.
Some compact cameras have larger image sensors, in the 1/1.7" range, but these are usually aimed at enthusiasts and are priced accordingly. If top-notch image quality in a compact package is an absolute need, no matter the cost, consider one of these larger-sensor compacts like our high-end Editors' Choice, the NIKON EN-EL5 (Best Deal: $409.00 at BUYDIG.com). These cameras can't match the long zoom range of compacts with smaller sensors, but generally perform better in low light. You won't be able to blur the background like you can with a D-SLR unless you're focusing on an object only a few inches from the lens, but larger sensors generally produce images with a bit more depth than their smaller counterparts.
Rule #2: Pay Attention to Lens Focal Length, Not Just Zoom Factor
The zoom range of a camera is often highlighted in marketing material, but that "x" number, which expresses how far a camera's lens reaches, doesn't tell you the full story. The focal length range, which is generally expressed as a 35mm equivalent value, tells you more about the field of view that the camera can cover. For example, two cameras may both have 3x lenses, but if one covers 24-72mm, like the SAMSUNG VP-D20 Camcorder , and the other 36-108mm, like the Sony DCR-DVD91E Multi-Chargers  Best Deal: %displayPrice% at %seller%, the former will be better suited for shooting in tight spaces while the latter will have a longer telephoto reach. Better point-and-shoots start at around 28mm these days, which is a nice wide angle that is well suited for shooting in tight spaces. Budget cameras often start around 35mm, which is less useful for family snapshots, as it will be harder to frame photos with multiple people in smaller spaces.
Rule #3: Weigh Size Versus Features
You can get a truly capable point-and-shoot camera that's downright tiny, but it will likely lack a long zoom lens and other advanced features, to keep it slim. And it might come with harder-to-manipulate controls, especially if you have larger hands (smaller cameras mean smaller buttons and dials). If you can, get your hands on a camera before you buy, it's the best way to see which models feel best.
If you're happy with a moderately long zoom and you don't need, say, an articulating LCD, an ultracompact model like our midrange Editors' Choice, the 8x CANON LP-E10  (Best Deal: $239.99 at Crutchfield)is a very capable camera that takes beautiful photos and will slide into even a tight pocket. Cameras that add more advanced functionality, like the GPS-equipped CANON DIGITAL IXUS 80 IS (Best Deal: $249.99 at Dell)or the ruggedized LP-E8 Battery (Best Deal: $138.95 at FumFie.com)will generally be a little bit bigger. And if you want a camera with an extremely long zoom range, like the 35x-equipped Canon PowerShot SX40 HS , you'll be nearing the size of a small D-SLR.
Rule #4: When it Comes to LCDs, Display Resolution is as Important as Size
Because you'll be using your camera's rear LCD to frame and review photos and videos, its quality is paramount. You should look for a camera with at least a 2.5-inch display, although 3 inches is preferable. Camera LCDs are generally measured in dots, with larger values representing sharper displays. A 230k-dot display is just passable in terms of sharpness for a standard 3-inch screen. You'll be able to see fine detail in your shots and enjoy better outdoor performance with a camera with a bright 460k or 921k LCD. Larger point and shoots, like the KODAK KLIC-7002 (Best Deal: $437.48 at ANTOnline), sometimes include articulating screens, which can rotate a full 360 degrees, allowing you to shoot from more interesting angles.
You can also get a point-and-shoot with a touch-screen interface. These models allow you to adjust camera settings and fire the shutter by tapping the rear screen, eliminating traditional physical control buttons. The main advantage is the ability to put a larger screen on the rear of the camera—the SAMSUNG VP-D270I Camcorder has a 3.2-inch display. If you're the type who wants to fiddle with manual controls, a touch-screen camera might not be a good choice, as it takes longer to change settings when compared to button-based commands. But if you want to happily shoot in automatic mode, the touch interface could be an appealing choice.
Rule #5: Good Low-Light Performance Lessens the Need for Flash
We test the high-ISO performance of every camera that comes through the PCMag Labs. Basically, ISO is a measure of the camera's sensitivity to light. The higher the setting, the more light the sensor collects. A camera that is set to ISO 100 will capture the same amount of light with a one-second exposure as it will with a half-second exposure at ISO 200. Getting a camera that performs well at higher ISO settings will make it possible to snap blur-free photos in lower light. Almost every compact camera has a built-in flash, but there are certain situations where it doesn't make sense to use it. Because the surface area of the flash is much smaller than that of a professional light, it's better to let the camera use it to fill in shadows rather than provide the entire of illumination for a scene.
As you increase the ISO, image noise increases as well—and too much noise makes for grainy, blotchy photos. A camera that performs better at high ISO values—you should look for one that keeps noise under 1.5 percent at ISO 800—can use the a lower powered flash to grab sharp photos, without creating a washed-out look. It's important to check reviews to see how cameras actually perform at these higher settings, as one camera may produce much better images at ISO 1600 than another. A few point and shoots are really masters of low light—the Sony HDR-HC5E Charger (Best Deal: $499.99 at Best Buy®)has an extremely fast f/1.8-2.5 lens that can snap clean images through ISO 1600.
Rule #6: Image Stabilization is a Must
Optical image stabilization, which compensates for the shakiness of your hands when taking a photo, is a must in a point and shoot camera, unless you plan on shooting on a tripod all the time. Nowadays, almost every midrange and high-end point-and-shoot includes this feature, but if you're trying to find a camera in the $100 range, it's something you should definitely check for. Our roundup of the best budget cameras is a good place to start.
Rule #7: Go for HD Video
Almost every point-and-shoot on the market will capture video, but you should set your sights on one that can record in HD. Don't get hung up on full 1080p resolution, a compact that records in 720p is more than capable of capturing video destined for online sharing. Most models that record HD video also feature a micro or mini HDMI output port to the camera connect to your HDTV for hi-def image and video playback; if you have a large screen HDTV, this is where you might benefit from the higher video resolution.
As far as recording the video, you'll want to check and see if the camera can zoom while recording, but be aware that the sound of the lens zooming is often picked up by the camera's mic. Some larger point-and-shoots will have an external mic port, making them better suited for more serious video work.
Rule #8: Get Last Year's Camera for Less
Point-and-shoot models are generally refreshed yearly, and improvements are usually incremental rather than dramatic. You can save a bundle by going for a year-old model, without sacrificing much in terms of functionality. For example, our Editors' Choice for high-end compacts was the OLYMPUS LI-12B until its successor, the S100, came to market and stole its crown. If you're able to live without the features new to the S100, you can find the S95 for sale at a full $100 off its original $400 sticker price. Likewise, the predecessor to our Editors' Choice superzoom, the Nikon Coolpix S9100, a $330 camera, is the same Sony DCR-PC8E Charger.It doesn't feature quite as long a zoom lens, but can be found online for as little as $130—which is an excellent value in our book.
Finally, before you settle on your perfect shooter, read our recent point-and-shoot camera reviews, and check out The 10 Best Digital Cameras for the top point-and-shoot cameras we've tested.

Replacement Battery with fast charge, practice makes winning? ( B )

Correspondingly, the battery replacement stations at night to charge the laptop battery, which play a grid Pinggu, improve grid efficiency role.
In the future, with the development of energy storage technology, a lot of stock battery to the grid at peak times the feedback energy, thus disguised form of clipping. In addition, the large number of new energy, including nuclear, hydro, solar and wind are not controllable, and the need to advance energy storage and peak shaving. Due to their instability, if direct Internet will pose a security risk. However, if the toshiba equium m50-244 battery replacement station can be transformed into energy storage center, a new energy to charge the battery, you can promote the development of the electric vehicle industry to the benefit of new energy sources.
Thus, in terms of the grid, battery replacement is a more favorable choice. This is also the State Grid and China Southern Power Grid in the pilot too fast charge station, decided in 2011 to battery replacement for the future direction of one of the reasons.
Charge service provider
Charging service providers can be a power grid companies, oil companies, or other third party, such as Better Place. Service providers have charging infrastructure and charge service. The advantage of the grid as a service provider lies in the control of the grid resources and plenty of money, but vulnerable to lack of experience to service the automotive industry. The oil companies on the contrary, such as Sinopec, will be in the country with more than 30,000 gas stations.
a) business model
Fast charge mode, the mode of operation of the service providers and traditional gas station is very similar to the main pay-per-consumer come charged and paid; or you can provide a packaged service, similar to the providers of mobile communications services package.
Battery Replacement mode is more complex. Basically, service providers buy batteries and consumers not to buy, service providers in accordance with the mileage charge for his services. The replacement battery can replace the station or centralized location in the off-peak hours in charge.
Better Place in Israel's case is a good reference of the currently available battery replacement model:

It must be pointed out that yes, the cost of the two business models for service providers to differ materially.
Fast charging stations up-front cost is relatively low, only the establishment of fast charging stations and install the fast charge machine (about 35 million units, each station on average about 10 units). HP elitebook 6930p Battery replacement stations, high upfront costs, because the service provider must be a one-time purchase of batteries, with extra batteries, and there put into the service station construction costs (approximately $ 3.5 million) for all users of its service stations.
Further analysis of the financial situation of the two models:
- Assuming that the peak service number 3 times, each lasting 1 hour, 50% of the total days of peak passenger flow
- A typical battery replacement stations every 3-5 minutes to replace a battery, a six charger car charging stations can charge to 80% in 30 minutes (without full of), then one a day change of power stations and fast charge stations can serve 72 trips
- Battery replacement mode, assuming that each car is equipped with a battery, but also in the station is equipped with battery backup (daily trips 1.5 to 2 times); depleted battery trickle charge station or central location. to extend HP ProBook 4710s battery life, while taking advantage of the low hours of cheap electricity. Battery cost each about $ 100,000, the life of five years (total number of charge cycles around 1500).
- Practice-based Better Place each battery replacement station cost 3.5 million yuan, and for 15 years.

- In the fast charge, assuming that each fast charge of $ 350,000 of the machines, and sustainable 15 years;
Under these assumptions, we can get the average annual cost of the two service providers shown in Figure 9.

Due to high battery costs, the cost of battery replacement stations up to about four times of fast charging stations; but to remove the battery cost and other costs due to low electricity and 18% lower than the quick charging stations.
Income aspects ProBook 4510s battery  replacement station is even more impressive. For example, in Shenzhen, fast charge by the government department under the only commercial electricity rate charges, to stimulate the electric vehicle purchase. Fast charging station service providers have no pricing power, and therefore the low rate of return on investment.
Battery replacement was seen as a leasing business, the profit margin is much greater. As a reference to the charges of the Better Place in Israel and battery replacement stations up to 30% ~ 40% gross margin. But in China, in order to support the development of the electric vehicle market, the proportion in the early days may have to much lower.
b) the risk of possible
Select the service providers engaged in the Acer aspire 5738z battery replacement business in addition to the high investment costs, the need to consider a range of high-risk:
First of all, with the technological development of battery depreciation of a material adverse effect. The price of lithium-ion battery is expected due to technological progress and economies of scale will drop substantially. Kearney is expected the price to 2020 from the current $ 750 per kilowatt hour down to $ 150 / kWh. Secondly, the battery life may be much shorter than the manufacturers guarantee. Under these provisions, the electric car's battery must be able to charge and discharge more than 3,000 times. However, the test proved that most of the market in the sale of batteries with 500 reach, which will greatly reduce the battery's economy.
In addition, the frequent replacement of the battery may have security implications, in the worst case can lead to accidents.
Quick charge for the service providers, the risk is much lower.
4 Consumers
For consumers, battery replacement with fast charging prices there are some differences.
Example, a pure electric car in BYD E6 battery replacement mode, the total cost of ownership (five years), fast charge mode for 293,025 yuan to 310,374 yuan, which has considered the factors of government subsidies. An interesting phenomenon is that the battery replacement mode E6 cost structure and its file petrol cars M6 is very close, as shown in Figure 10.

Consumer views and habits must be considered. Fast charging them more traditional and familiar: for their own pay-per-use services, and have their own vehicles. Battery replacement, consumers need a lot of boot. However, for consumers, APPLE a1175 battery replacement more convenient, because it can be completed in just 3-5 minutes, fast charging takes 30 minutes; In addition, consumers in this mode without having to worry about battery life.
China's charging facilities for future
A. The three scenarios

Looking to the future (5-10 years), charging facilities market may go to three different scenarios:
- Battery replacement victory: battery replacement into the mainstream, mainly to serve high-performance electric vehicle fast charging market segments
- Fast charging victory: fast charging occupied most of the market, and battery Dell inspiron 1440 replacement of major public transport taxi and bus services
- Split the market: the two modes have their own gains in the market

From the current situation, the battery replacement in China gain the upper hand the possibility of battery replacement victory. Power Grid Corporation, part of the automobile manufacturers, technology providers (such as Better Place) has been established, they will jointly set up the standards of the battery replacement stations and battery replacement stations in major highway construction. Other car manufacturers may be forced to accept the battery replaced. In the field of cell manufacturing, is king. Electric vehicles will become a low-cost mainstream transport. Part of the international automobile manufacturers will choose to continue to focus on rapid charging service; However, the lack of fast charging a service network will cause a lot of constraints, most of their consumers depends on the family charging facilities.
However, if the technology and market development of the local car manufacturers failed "fast charge victory may come, driven by international car manufacturers and BYD. Through their technological advances and marketing strategies, most of the potential electric car buyers can be effective in attracting and forced power grid companies to be with. The battery presario cq50 Compaq replacement will focus on public taxis and buses, the special needs of the market.
"Split market" in this scene, the quick service market will be open to all competitors. Replacement Battery with fast charge coexist, each mode of service to different market segments.
Although we can not exclude the possibility of scene two and scene, scene one is most likely to become a reality. Grid Corporation of monopoly power and the inherent advantages of the local car manufacturers will play a decisive role.
B. different enterprises
Car manufacturers and battery manufacturers
For the local car manufacturers and battery manufacturers must quickly with the grid, service providers and technology developers cooperation, the rapid accumulation of experience in electric vehicle battery replacement. Reliability, safety and low cost are the main target.
Many international car manufacturers need to re-evaluation strategy for the Chinese market. China market should continue to use its global strategy, or should have a dedicated strategy?
The taxi is likely to be a segment of the market acceptance of electric vehicles. Dominant vendor in the taxi area, such as the public, the need for early to prepare.
Battery manufacturers key to R & D batteries for battery HP pavilion dv6134ea replacement mode. May need to reconsider its high-performance research can focus on the battery cell production and special battery pack design to leave the small innovation-driven company?
2 grid
As part of the smart grid program in the grid pre-planned grid upgrades, to actively promote the development of the electric vehicle industry; grid should give full assessment of the impact of charging facilities for peak load, to modernize the distribution network.
Grid Corporation should persuade the Government to cover the cost of electric vehicle infrastructure to the overall cost structure, and to persuade government departments to enhance the tariff therefore. Guangdong Province, for example, charging facilities and grid upgrades, the total construction cost is expected in the years 2012-2020 is about 2.4 billion yuan, the social electricity during a total of about 56,000 billion kWh will be increased to 0.0005 yuan per kWh can be achieved and expenditure balance, shown in Figure 11.

(3) service providers
Charge for electricity service providers should set the charge for electricity standard facilities together with car manufacturers, battery manufacturers and technology developers.
Charge for electricity service providers need to lobby the Government to promote competition in the market to avoid grid enterprises due to the inherent advantages and monopolize the market. The oil companies should make full use of its existing gas station network, and infrastructure upgrade. The original gas station in the central city will become the most important assets of the cooperation with other enterprises.
Effective business model is still experimental, innovative tools and an open mind attitude is essential for success. Should be leveraging the latest technology such as RFID to provide a unique customer experience, which will form a strong competitive advantage.
Service providers should be in the business model and customer service improvement efforts. For example, service providers may consider the formation of strategic cooperation with battery manufacturers, in order to reduce the cost of buying batteries and avoid the risk of battery life. Leasing compared with buying batteries, the battery manufacturer aspire 7735z battery is preferable, and this will greatly reduce the upfront costs.
Cooperation with automobile manufacturers, service providers can also consider the establishment of a predetermined price of electric vehicles to ensure that the repurchase plan, to catalyze the electric vehicle market take off.
C. Government policy
In China, government promotion and financial support is very important to the success of an industry. The Chinese government priority is to establish a competitive electric vehicle industry, it can provide important thrust for the automotive industry as well as the overall economic upgrade. Charge-for-power facilities should be to support this goal as the fundamental starting point.
The government needs to carry out a series of actions or discussion:
First, the need to convene the key enterprises in the industry to jointly develop standards. There is no unified national toshiba satellite a105 battery replacement or fast charging standard, the electric car industry can not be rapid development.
Second, charging facilities for the commercial interests of the competition should not be constrained to the overall development of the electric vehicle industry. Government policy should create an open environment to promote free competition. Different business model after testing the market, should not adopt the strict market control measures or a strong preference for state-owned enterprises.
Grid enterprises is the obligation of the distribution network upgrade, they should not be exclusively electric vehicle charging electric services market. Grid companies can charge for electricity services business, but should be prepared to eventually make it to operate independently

Loss of laptop battery repair method

Laptop battery can use for some time with laptop battery detection tool to test a laptop battery loss rate.

This laptop battery loss record capacity is not the same as the actual capacity of the battery and control circuit, will lead to the decline in battery capacity, the use of time.

The loss of laptop battery repair, laptop battery calibration to themselves.

Loss of laptop Dell latitude d630 battery repair correction methods are as follows:

1 Make sure the notebook is turned off, and then connected to the external power supply to charge the battery to the laptop.

2 laptop battery is fully charged and then boot. When the screen appears the "Press to enter the System Configuration Utility", press [F2] to open the SCU program, and let the computer stops there. BIOS settings interface, different brand laptop enter key, usually F2, or F10.

Unplug the power adapter, the computer continued to open until the Dell xps m1210 battery is dead and shut down so far.

4 Connect the power adapter to the battery is full.