Asked on Super User by Steve Cohen, 4 years ago. No reply there for at least a week.
Diagnosing battery issues on laptop
My Thinkpad T540 laptop (8 yrs old) developed battery issues. It wouldn't run for more than 1/2 hour without being plugged in. I took it into a computer shop who ran some tests, determined that the battery was indeed bad, ordered a new one, which I took home yesterday. Not satisfactory - and, in one way, worse. When plugged in the laptop says not charging even though the indicator says 24%. Even more telling, with the old battery, one could unplug the charger and still have the laptop run. Now it immediately turns off on unplugging. However, it will start when unplugged. Another test I tried w
This question is one of 9 reports of the same problem:
Laptop Power/Battery issues
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Question by Steve Cohen on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.