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Battery charges quickly but does not hold charge even with new battery

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First, you need to make sure your power adapter is providing enough power to both run the laptop & charge the battery. A very good way to do this is to compare your laptop voltage & ampere requirements (written on a sticker on the bottom of the laptop) with the voltage & ampere ratings of the power adapter. Voltages should be the same, or the power adapter's voltage about up to 0.5 volts more than the laptop's voltage rating. Amperage of the power adapter should be at least equal to or greater than the laptop's rating. It should never be less than the laptop's rating, or else the power adapter will be providing insufficient amperes to charge the battery. Of course, the power adapter's nominal amperage might be ok, but it degraded on usage. You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.

Posted on Sep 06, 2010

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My acer aspire 5735Z wiil not stay charged for more than 1 hour when not one the charger and just shuts off even if battery indicator shows atleast 50% charge, is just a bad battery?


Batteries wear out with use and can be replaced easily with a new one.

If you laptop is more than one year old then most probably the battery is weak and cannot hold the charge. When a battery becomes weak its capacity to hold charge reduces considerably until you have to remove it to start the laptop (with charger only).

You can continue using it until the battery time drops to about 10 minutes. After that, simply replace it with a new one.

If the laptop is new and under warranty, you should contact warranty support asap.

To increase battery life place the laptop on a solid table where there is ample air flow beneath. Heat will destroy a battery faster such as when used on bed or your lap often.

Regarding you question about shutting down even when battery is 50% it could be due to following reasons:

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if you have a common Mp3 player, You can purchase a new fresh battery and replace it. its quick and easy.

i can instruct you if you want so.
First check ebay for the exact same battery that you have inside you Mp3 Player.

Learn More about Lithuim-Ion Batteries on HowStuffWorks.com

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