Posts tagged Lithium

GM volt Lithium battery – Crush test with A123 vs LG Chem


After watching many crush test about lithium cells for EV, i decided to do my own test when i saw that Backhoe-Loaders in my street. I asked the guy and e accepted… for the science…. In this video you can se two different cells having torture when crushed with this 10 tons loader. The A123 is a lithium ironphosphate.. one of the best lithium cells on the market, and an 2 LG Chem lithium cobalt cells found in many laptop computer. The A123 measured 3.32V and the LG Chem shown 3.9V befor ethe test. The A123 was the first choice for the GM volt until LG chem had the contract. The Cobalt LG chem cell have 2200mAh and the A123 Ironphosphate have 2300mAh. When i did that test i attempted to see a big fire, flames and smoke and pop on the LG Chem cells… and nothing on the A123.. or maybe just some smoke… Finally that turned out differently !! For more info on the LIthium cells tests for electric bike, moto and car, bisit this adress:

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Lipo lipoly lithium Battery Discharge Test


Testing the EFuel Hobbies battery against an Impulse. The EFuel is almost half the price and performed as well if not better than the Impulse!!!

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What You Should Know about Lithium Ion Laptop Battery


What You Should Know about Lithium Ion Laptop Battery

The greatest advantage of owning a laptop is its unmatched portability. The battery power is a decisive factor to determine how long you could use your laptop in the place where electricity is unavailable. The most common-used laptop batteries today are Lithium Ion batteries.

Traditional rechargeable batteries might have “memory effect” that does not apply to Lithium Ion. The effect is also used to explain once there is any battery doesn’t work for us at its full capacity. In order to overcome this, people charge this laptop battery in certain ways to avoid or fix. Lithium Ion batteries’ poor performance is usually caused by mishandling or age.

Quite a few of us like to fully discharge a laptop battery before we recharge it. This is wrong. Lithium Ion laptop batteries have limited amount of charge cycles – a fully discharge will shorten its serving life span.

How to make your laptop battery pack have longer life span?

The charge cycles of Lithium Ion batteries are from 300 to 600, which could be used from 2 to 4 years. For taking advantage of your laptop battery optimally, the following things you should notice:

* If you don’t need the laptop to finish a task, don’t forget to enable the power saving feature while you use your laptop on battery power.

* Calibrate your battery with a full discharge every 30 charges for keeping its fuel gauge’s accuracy. Before recharging, set your setting to the automatic cut-off point.

* Disconnect the battery when you use AC power. If the two used at the same time, the internal temperature of the battery rises, thus the aging process of your battery accelerate.

* For battery not use for a long time, make sure that it has about 40% charge level and store in a cool dry place. Lower temperature slows down aging process of laptop battery.

* If you like to use battery to run your laptop, charge it as often as possible.

* If the outside temperature is high, don’t leave your laptop or battery in your car. Higher temperature shortens the life of your battery.

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Used Lithium Ion LapTop Battery Buying Tips


Used Lithium Ion LapTop Battery Buying Tips

Used Lithium Ion LapTop Battery Buying Tips

This guide will explain the basics of Lithium Ion battery technology and the  battery, criteria that should be considered when purchasing a used battery for your laptop computer. The basic information regarding Nickel Metal Hydride (NiMH) and Lithium Ion (Li-Ion) batteries is the same for all laptop computers. Buying a used laptop battery can be a great bargain or a terrific waste of money. Take a few moments to educate yourself on Lithium Ion batteries and the information that should be in a battery listing before purchasing a used battery.

Lithium Ion batteries have become the preferred power source for most current laptop batteries. Older laptops used NiCad batteries, and more recently laptops have used NiMH batteries. This guide will primarily discuss Li-Ion batteries because they are the predominant  battery technology for current generation laptop computers.

Li-Ion batteries combine the best qualities of alkaline batteries with the best qualities of rechargeable batteries. Li-ion batteries provide constant voltage during discharge and do not suffer from the memory effect that plague Ni-Cd batteries. Li-ion batteries also provide the highest available energy density of any available battery technology (i.e. provides more power per ounce as compared to NiMH or NiCad) Li-Ion batteries also have a low self-discharge rate (about 5% per month) compared to Nickel Metal Hydride (about 30% per month) or Ni-Cd (about 20% per month). A little known characteristic of Li-Ion battery technology is that Li-Ion batteries lose approximately 15% usable dell Inspiron 4000 battery, capacity each year (depends upon storage temperature). Because of their characteristics, Lithium Ion batteries can operate for between 300-500 cycles and last for about 5 years from the manufacture date.

Many Li-Ion batteries have a set of built in LEDs to determine battery charge status. Just push the button and you can readily determine the charge state of the battery. The LEDs DO NOT provide any information regarding the health (or capacity) of the battery. It only indicates the battery’s charge state. If the battery only holds a 360 mAH charge, all the lights will illuminate, but the battery only may only have 10% of it’s original capacity.

An average laptop battery operating time is a tricky number to accurately quantify. Battery operating time is dell Inspiron 4100 battery dependent upon power settings selected by each individual user and the processor speed. A battery that operates for 2 hours on one laptop with maximum energy saving options selected (e.g. dim screen, reduced processor speed, disk spin down, etc.) may only operate for 1 hour on the same laptop with no energy saving features selected.

A simple test that I use for determining battery capacity is to play a DVD. This is the most energy intensive test that you can perform on your laptop. I usually set up this test with all energy saving features disabled (disk spin down = off, full bright display, processor performance = highest, no sleep, etc.) This provides the worst case scenario. Normal operating conditions will usually be better than my test conditions. I would rather have a customer get a battery that was tested to operate for 90 minutes and actually operates for 2 hours (under normal conditions), than for the customer to get a battery that only operates for 1 hour.

Here’s What You Should Consider Before battery Purchasing a Used Battery:

Li-Ion batteries have a 300 to 500 cycle lifetime. Mac OS X Tiger (10.4.3 and on) allows you to monitor the number of cycles on a battery using the System Profiler. I assume there is a similar capability in Windows or some shareware that is readily available. Try to avoid a used battery that has a very high number of cycles on it. A new battery should be able to play a DVD for over 2 and a half hours. A good used battery should be able to play a DVD for at least an hour and a half. A used battery that plays a DVD for about an hour and a half will probably operate for over 2 hours under “normal” operating conditions (this is just an educated guess based upon my experience). Li-Ion batteries tend to lose about 15% capacity each year, depending upon storage conditions. Try to avoid purchasing a battery that is more than 5 years old. Be cautious if you’re considering a battery where the listing doesn’t provide any test data. It’s a simple matter to test the battery dell Latitude CPX battery, and provide operating conditions and run time in the listing. Be cautious when a battery listing makes claims like “holds full charge” or “all 4 lights illuminate” . As I stated above, this means virtually nothing regarding the health of the battery.

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Lithium Polymer Battery Explosion’s (liposack)


A demonstration of lithium polymer batteries and how violent they are when charging goes wrong. The sack used is a liposack specifically used to hold the batteries during charge to keep people from harm. Their website is
Video Rating: 4 / 5

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Discount Lithium Laptop Battery


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Lithium Laptop Battery Tips

Achieve Maximum Laptop Battery Performance on the Road
Lithium Laptop batteries are crucial when working on the road. To get maximum performance from your laptop battery, fully optimize the laptop’s power management features prior to use. However, there is a trade off when setting your laptop power management. You will achieve better power conservation in exchange for lesser computing performance. The power management system conserves the Lithium laptop battery power by setting the processor to run at a slower speed, dimming the laptop screen, slowing down the hard drive when it’s not in use and causing the machine to go into sleep or suspend mode when it is inactive. Your laptop user’s guide will provide information relating to specific power management features.

Increase your Laptop Battery Life
Did you know that detaching your main Lithium laptop battery from your laptop would increase your laptop’s battery life up to 75%? Our experience and testing have shown that even when you are plugged in with your laptop ac adapter and your battery is fully charged, the laptop will still use the laptop battery resources in small increments. This will put unnecessary charge cycles to your battery. Since typical Lithium laptop batteries have 375 charge cycles, having a fully charged battery inserted will put unnecessary charge cycles. The downside to removing your Lithium laptop battery maybe a loss of power when the ac adapter is accidentally unplugged or when there is a power outage.

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Laptop Battery Repair / Rebuild : Lithium Ion Cells 18650


Instructable : Dell Laptop battery pack repair. How to replace laptop 18650 lithium ion cells. Save approx. with this rebuild
Video Rating: 3 / 5

Extinguishing In-Flight Laptop Computer Fires – Lithium Battery Thermal Runway


Courtesy FAA. Extinguishing In-Flight Laptop Computer Fires. October 2007. Advanced Imaging, Operations Planning, FAA Air Traffic Organization, for airline industry review and comment.
Video Rating: 5 / 5

Don’t let that dead laptop battery ruin your life. Repacking a old ibook battery with new cells is a easy operation. Within 10 minutes and you can have a battery that lasts twice as long as the original.
Video Rating: 4 / 5

Lithium Ion battery fire


help why is my computer on fire
Video Rating: 4 / 5

rechargeable 18650 batteries from old laptop battery. Recharger for these, cheap, free shipping here:

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