New laptop battery calibration question.

David Farber · 2013-10-28T20:45:27+00:00

I bought a laptop battery for my 10 year old Vaio laptop from an eBay seller. It started up fine when I initially booted up my laptop. But when the power meter was in the 52% remaining neighborhood, the system shutoff. I don't mean hibernate, I mean it was like someone pulled the plug (if it were running on AC power). I booted up again on AC power and let the battery charge to 100% again, then I let it run off the battery with the AC power removed. This time it shut off at about 72% power remaining. The best it will ever do is stay on until about the 30% remaining mark. I contacted the seller and this was the response, "Please try calibrating it first by doing the following steps: 1. Charge the laptop up to its maximum capacity. Leave the device plugged for two hours or more. 2. Disconnect the laptop from AC power. Disable any means in the Power Options for the laptop to sleep or go into hibernation before the battery charge is depleted to. Use or leave the laptop on until the battery is depleted to 3% charge, in which the computer automatically enters hibernation. 3. Leave the laptop in hibernation state for five hours or more. 4. Charge the laptop again up to its maximum capacity." This seems a bit hokey to me. Why would a new battery need this much attention?" Thanks for your reply, -- David Farber Los Osos, CA

Oct 28, 2013 21 Replies

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David Farber 12 years ago

Thanks for your reply.

David Farber Los Osos, CA

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Jeff Liebermann 12 years ago

Well, HWINFO32 got the Chemistry correct, which is critical because that's what chargers are suppose to use to determine if they should try to charge the battery, or simply power the laptop.

5.1.30. DeviceChemistry() (0x22) (...) Note: The following is a partial list of chemistries and their expected abbreviations. These abbreviations are NOT case sensitive. Lead Acid PbAc Lithium Ion LION Nickel Cadmium NiCd Nickel Metal Hydride NiMH Nickel Zinc NiZn Rechargeable Alkaline-Manganese RAM Zinc Air ZnAr Lithium Polymer LiP

Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

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