回答“How to fix battery/charging issue with laptop?”WOW, I feel stupid! For years I’ve been dealing with this too. Different batteries, chargers, tested against known good hardware, I honestly thought custom vBIOS and System BIOS were the issue, or just carelessness reassembling after repasting the heatsinks and cleaning. All that i needed to do was “Lock” the battery in. The slide release didn’t keep it connected well enough.