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Hi, I don’t know where else to look. I bought an iFixit battery and put it in an SP4. It turns on with power adapter connect, but turns off immediately after you unplug it. I tried going to device manager and uninstalling the battery driver + doing a full reset (via power + volume up)…nothing. I ran “powercfg /batteryreport ” and it recognizes the battery and says it’s fully charged. Edit: a co-worker tested the capacitor that is known to fail and it is good. Installed batteries Information about each currently installed battery SYSTEM PRODUCT NAME Microsoft Corporation Surface Pro 4 BIOS 109.3192.768 03.24.2020OS BUILD 19041.1.amd64fre.vb_release.191206-1406 PLATFORM ROLE Slate CONNECTED STANDBY Supported REPORT TIME 2021-04-0708:54:45 BATTERY 1NAMEX910528 MANUFACTURER DYN SERIAL NUMBER 39167 CHEMISTRY LION DESIGN CAPACITY 35,250 mWh FULL CHARGE CAPACITY 33,172 mWh CYCLE COUNT- 2021-04-0606:19:29Connected standbyBattery100 %35,475 mWh07:18:40Connected standbyAC100 %35,422 mWh07:18:54ActiveAC100 %35,422 mWh07:19:59Connected standbyAC100 %35,422 mWh07:19:59ActiveAC100 %35,422 mWh08:24:23Connected standbyAC100 %35,422 mWh08:30:33ActiveAC100 %35,422 mWh09:34:53Suspended100 %35,422 mWh09:57:59ActiveBattery100 %35,422 mWh10:00:07ActiveAC95 %33,667 mWh10:58:36Connected standbyAC100 %35,520 mWh11:07:01ActiveAC100 %35,520 mWh11:52:24Connected standbyAC100 %35,520 mWh12:02:53ActiveAC100 %35,520 mWh2021-04-0708:54:33Report generatedAC100 %35,520 mWh
If your laptop is unable to run off battery then try turning off your laptop and let it charge for an hour or so. If the battery still does not charge most likely the cells in the battery have dropped below the allowable low voltage because you have not charged the battery in a long time, the battery protection circuit might have kicked in to prevent charging the battery for safety reasons. Try the following methods. https://www.cnet.com/how-to/how-to-fix-a… https://www.minitool.com/news/windows-10…
