Vendredi 17 juillet 2009 5 17 /07 /Juil /2009 14:54

 

Carrying and swapping Laptop Battery on the plane is no fun. What if you could have a powerful battery extender capable of powering the notebook from your laptop's slim-line carrying case? Here we review the APC UPB90 universal laptop battery and find it to be an effective, but expensive product.
Packaging and Unboxing Rating

The battery was sent directly from American Power Conversion in Chino, California by standard three to five day shipping and arrived in four business days. Well boxed and taped, the unit was packed in bubble-wrap and was in a plastic blister pack for retail rack display. The blister pack was inside an anti-static sleeve. Although I'm not a big fan of blister packaging, I was pleased to see that the edges of the IBM 08K8198 Battery pack were notched for easier opening.
Setup Rating

Setting up the UPB-90 involved first identifying the power tips to use with the notebook. My test machine was a ThinkPad R52 and the included chart identified the correct tips as type "B/B." Three connections are involved. The first is from the notebook's power adapter ("power brick") to the UPB-90's power cord, and this used the B jack. The second is to the universal battery itself, and this used a proprietary adapter. The third, and located on the longest cable, is to the notebook using the IBM 08K8197 Battery B tip.

The OLED display indicated that the battery was 49% charged at first power-up. It went to 100% using the notebook's power adapter in less than two hours. It's rated for full charge within 3.5 hours, so this was in line with the specifications.

Here's a diagram from the documentation that shows the connections.

Image: APC

Here is the UPB-90 connected to the ThinkPad R52 IBM 92P1075 Battery.

Product Features Rating

As such things go, the UPB-90 is a bit of a luxury product. Some features, such as the OLED display and the voltage auto-sensing and auto-setting, are only found on the higher-end devices. Its light weight and notable thinness, however, are somewhat representative of this class of product, except for the very cheapest models.

The image below will give you an idea of how thin it is.

Fit and Finish

The top of the unit is covered in a pseudo-rubbery, finely-pebbled finish that is a finger-print magnet. I'll be glad when this trend for laptop IBM ThinkPad R40 Battery and cell phone finishes passes. Eleven star-screws hold the case together from the bottom. No flex or creaking were evident when the device was squeezed with light pressure. Fit and finish and quality of construction appeared to be excellent.
Ports and Connectors

The UPB-90 features two five-volt USB ports suitable for recharging portable devices such as MP3 players, cell phones, and PDAs capable of charging from a USB sync cable.
Information and Diagnostics
The OLED display itself proved IBM ThinkPad R32 Battery somewhat hard to photograph. Actually, it was both clear and sharp, and, although small, easy to read. Looking at it, the thought occurred to me that if I placed it in the APC roller case that I am also testing and with which the UPB-90 is supposed to be compatible, that beautiful display would be either (1) at the bottom of the case, or (2) upside down.
In the first image, I tried a close-up without flash, and the color representation is realistic. In the second image, I tried a contrasting background and got a false color for the display. It adequately demonstrates the sharpness of the display, though.
Many of the individual screens offer a choice of the information displayed. For example, for both "Charging" and "Capacity," the options are a percentage, a time IBM 02K6928 Battery remaining, or a bar-graph representation.

 

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Jeudi 16 juillet 2009 4 16 /07 /Juil /2009 11:46

 

If the battery is manufactured by the maker of the laptop then you can rest assured that the battery Laptop Battery will be reliable. The other thing to look for when buying a replacement battery is the type of battery.

Li-Ion and Ni-Poly batteries are the most advanced and last longer. Some laptops are designed to use the kind of battery it originally came fitted with, this means if it came with a Ni-Cad battery it must be replaced with a Ni-Cad battery. Finally you must study the power ratings of the battery you are buying.

Batteries are growing smaller and the DELL 08K8194 Battery power capacity is increasing. Batteries have two ratings marked on them. When buying your replacement battery buy one with the same voltage rating as the old one but try to get a battery with a higher ampere rating. This battery will have longer charge cycles.

Many batteries are rated in watt-hours. This is perhaps the simplest way to rate a battery. No suppose your laptop runs on 17.28 watts (which is pretty unlikely) a 51.84 watt battery will power it for 3 hours. SO divide the power ratings in watts of the battery by the watts of your laptop to see how long the battery will run your laptop IBM 08K8196 Battery .

Sometimes the power ratings in volts and amps on a battery vary. For instance a laptop that runs on a Li-Ion 14.4 Volt, 3600mAh battery may be able to run on a Ni-MH battery with a 9.6 Volt, 4000mAh rating.

The Li-Ion battery will be stronger even though the amperage ratings are lower. Li-Ion: 14.4 volts multiplied by 3.6 amps will deliver 51.84 watt hours of power and a Ni-MH battery will deliver 38.4 watt hours of power because 9.6 Volts multiplied by 4 amps will equal 38.4 watt hours. Naturally the Li-Ion battery should be your choice for a replacement battery.

Buyer’s Guide to Toshiba Battery IBM 92P1102 Battery

Toshiba holds a great reputation for building strong, reliable and fast business portable computers. Nowadays, Toshiba focuses not only on the manufacturing of business portable computers but also on the production of laptops (portable computers) oriented towards other types of usage.

With a whole arsenal of laptop models under the common name of the Satellite series, Toshiba is making a dynamic move towards providing you with laptops IBM 92P1077 Battery that will fulfill your needs, whatever they might be. To begin with, if you are an average computer user, you need a laptop and your budget is limited then Toshiba has something great to offer to you; it’s the Toshiba Satellite A60. The A60 can be a great laptop if you intend to use it for e-book reading, emailing, internet surfing etc.

Following the A60, are the IBM 92P1073 Battery Satellite MX30 laptops. Those laptops allow you to access wireless networks without having to plug in any extra hardware. Additionally, the Centrino processor consumes less energy and thus, your laptops battery duration is extended.

Are you seeking for a brutally powerful laptop? Those laptops are really powerful and will give you a great experience if you are running a heavy application such as a video game or a graphics design program. Finally, last on the list are the P30 laptops. Those laptops feature a 17” display which can provide a really great experience whatever you IBM 08K8199 Battery might be doing.

 

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Jeudi 16 juillet 2009 4 16 /07 /Juil /2009 11:42

 

Your portable laptop’s Laptop Battery performance depends greatly in the performance of its battery. And its life span depends on its users-and that is you. These are the principles that guided the Compaq to come up with the tips for you to maximize the performance of your Compaq laptop battery.

To maximize your Compaq laptop battery, as recommended by Compaq, you need to:

1. Properly Break In Your New Batteries

New batteries are not yet fully IBM 08K8193 Battery charged when sold. They need to be cycled or conditioned first to get its optimum capacity. Charging and discharging of the battery for up to 4 or 5 times is enough to condition it.

2. Prevent the Memory Effect

The memory effect can be avoided by charging and fully discharging the battery ones or twice in a month.

3. Clean Your Battery Always

Dirt on the battery contacts can lessen the performance of your Compaq laptop battery. Cleaning it with alcohol and cotton can make it look and IBM 08K8192 Battery work as good as new.

4. Exercise Your Battery Regularly

This is recommended for those who use the AC adapter for longer period of time. It is advised that you use your battery at least once in two weeks interval. Batteries lose their charge when stored for a long time and you need to break in your battery IBM 92P1101 Battery when this happens.

5. Store Your Battery Properly

When not to be used for a long time, your battery must be stored in a clean, dry, and cool places that are free from heat and other metals. A stored battery IBM 92P1089 Battery losses its charge in time and it needs a break in before reusing.

6. Optimize Your Laptop’s Power Management Features

The Power management features of the Compaq laptop computers enable power conservation of the Compaq laptop battery. You can set your processor at lower speed or you can set the LCD’s brightness into its minimum level to ensure low IBM 92P1087 Battery power consumption.

 

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Mardi 14 juillet 2009 2 14 /07 /Juil /2009 10:30

 

Left-field battery Laptop Battery developer ZPower has signed up a "major notebook computer" manufacturer, which will release a laptop fitted with its silver-zinc power packs next year.

Unsurprisingly, perhaps, ZPower isn't saying who it is. Still, it's a coup for ZPower, which has been trying to persuade the world for a few years now that it has a better rechargeable battery solution that lithium-ion.

Its central pitch is that its technology delivers power for longer than a same-size lithium-ion battery will, and that it does so in a form not only more eco-friendly but one that IBM FRU 08K8193 Battery has no risk of spontaneous combustion too.

ZPower's projections have silver-zinc beating lithium-ion energy density by 30-40 per cent, a lead it claims can only increase over time as silver-zinc technology continues to evolve.

The basic structure of the cell sandwiches a separator between composite polymer zinc anode and a silver cathode. The battery contains water, so it's not inflammable, and there's no lithium present. ZPower says its cells don't need all the thermal regulation circuitry IBM 92P1060 Battery that lithium-ion batteries do to prevent them from overheating.

Silver-zinc batteries have been tried before, but past designs suffered from short-circuits as tree-like structures called dendrites form on the anode over time. This distorts the shape of the anode, pushing it through the separation layer to make contact with the cathode. Result: no power.

ZPower says the polymers in its anode structure inhibit dendrite formation, significantly minimising the risk of IBM 08K8214 Battery the short circuit.

And the green angle? The company maintains that 95 per cent of the key components of a silver-zinc battery can be recycled and used to make new batteries. Recycled parts, it says, are just as good as fresh ones.

Maybe, but lithium-ion battery production dwarfs anything ZPower can output, and the technology is priced accordingly. The spate of notebook fires from 2006 have done nothing to dampen gadget maker's reliance on the technology.

Silver-zinc may be IBM 08K8195 Battery better, but it's not yet proven in the field. Which is why ZPower's mysterious design win is so important. In the past, it has said it's "working with Tier One notebook computer and cell phone manufacturers", but that has largely centred on technology evaluation. This time, we're going to see silver-zinc in a real product. Could this be the event that puts the technology on the map?

 

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Mardi 14 juillet 2009 2 14 /07 /Juil /2009 10:26


A bad connection between DC-IN power jack on the system board and the system board is a very common problem with Laptop Battery Toshiba Satellite M35X and Toshiba Satellite A70/A75 notebooks. If your laptop is out of warranty, then you can fix the problem by resoldering DC-IN jack on the system board. If it’s still under warranty, it would be fixed at no charge to you.

Problem symptoms:

Laptop randomly shuts down without any warning.
Power LED and battery IBM ThinkPad T40 Battery charge LED start flickering when you wiggle the power cord or the AC adapter tip on the back or your laptop.
The battery will not get charged.
When you plug AC adapter, the laptop appears to be dead and there is no LED activity at all (DC-IN jack on the system board is broken).
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack. Toshiba Satellite M35X and Toshiba Satellite A70/A75 disassembly guides will help you to remove the system board. Take a closer look at the power jack on the system board with a magnifying glass. In most cases you get the power IBM ThinkPad T41 Battery problem because of a bad connection between the DC jack and the system board, you’ll see a crack between the DC jack connector and the system board.

Here is an example of Toshiba Satellite M35X power jack. The crack occurs between the DC jack pin and the system board.
In some cases the connection is good, but the DC jack is bad itself. You can find a new DC jack for Toshiba Satellite M35X and Toshiba Satellite A70/A75 laptops here. Search for DC jack M35X or DC jack A75.

How to resolder laptop power jack yourself.

UPDATE:

Sometimes, after you replace IBM ThinkPad T42 Battery the jack, you can see that the system board doesn’t get power at all. The battery will not charge and the power LED will not light when you plug in the AC adapter. So, here’s a possible explanation.
When a connection between the positive pin and the motherboard breaks (cracks), the power jack gets loose. You can feel it when you plug in the adapter plug. A loose power jack can damage the trace inside the hole in the system board. Take a look at the picture.
As you see, the positive pin goes through the hole in the system board and you solder it on the top side. Right? What if the trace between the top side and the bottom side is broken somewhere inside the hole? I’ve seen it before a few times. In this case everything looks nice and clean on the top side. When you plug in the AC adapter, you get normal voltage readings between “+” and “-“ pins on the top side, but the power DOESN’T go to the motherboard at all, because there is no connection between the top and bottom sides. Test with a multimeter if there is a connection between the IBM ThinkPad T43 Battery top and the bottom.
If the trace inside the hole is broken you still can fix it. You can run a wire to connect the top and the bottom sides. Be careful not to short something on the board.

Update:

Here’s another solution to fix the power jack problem, it shows how to relocate the power jack outside the laptop base. Check it out here: Toshiba Satellite A75 failed power jack workaround.

When you repair a loose IBM ThinkPad R50 Battery power jack, it’s a good idea to check the jack on both sides of the motherboard. When you remove the top cover from a Toshiba Satellite A70/A75 laptop you can see only points where the jack is soldered to the motherboard as it shown on the second picture in this post, but you cannot see the jack itself as it shown on the first picture.
Removing the motherboard from Satellite A70/A75 laptop is a good idea because the jack itself might has a broken “+” pin, as it shown on the IBM ThinkPad R51 Battery picture below. If the “+” broke off the base, you’ll have to replace the jack.

 

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