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/diy/ - Do It Yourself

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>> No.1370940 [View]
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1370940

Hello /diy/,
I just replaced the 18650s in my old laptop battery pack. After the first charging (laptop said batteries had 0% charge) I went from 100% to 5% hibernate as suggested for calibration, but got only 1.5h of battery life. I was expecting >4. The batteries are genuine. The charging process stuck for quite a while at 99%-charging before saying 100%-fully charged. Then I discharged them to 5% and the computer went to hibernate. I'm discharging them for the second time now and it looks the same again.

How should I re-calibrate the pack? I'm guessing since I got the 18650 at half charge, that the laptop thinks that's the 0% charge. Any ideas?

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