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how to calibrate my battery (lubuntu)

mk flag

i recently bought a new battery for my laptop (compaq presario cq60) the battery works fine until about 25%. Then the percentage immediately jumps to 5%. i tried this but it did not worked How to calibrate the laptop battery on 12.04 (error i get: the battery just provided charge data which is not accurate enough) battery takes about 2 to 2 and a half hours to discharge. What should i do to fix the problem?

cn flag
Have it go empty and then fully charge it. The battery is a pure hardware and BIOS thing, nothing related to the OS. The OS only reads the data provided by the hardware.
john karpontinis avatar
mk flag
my computer is running lubuntu 20.04 lts
john karpontinis avatar
mk flag
i did try to completely drain it and then recharge it. I am actually going to try it again because i am not sure if i completely drained it or charged it at a very low percentage (3%)
john karpontinis avatar
mk flag
unfortunallity i tried and it did not work. What else should i try?
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