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T520 battery mystery
T520 battery mystery
I replaced my T520 system board and everything works except the battery. Curiously, it registers as being connected and will accept a charge. But as soon as I remove the AC adapter the system is dead. I have tried 3 different batteries of varying health that all work in different units. I can only assume there is a fault somewhere on the board. Any suggestions? I've tried all the standard fixes like full reset to no avail. Thanks.
Re: T520 battery mystery
So the battery can be charged in the laptop, but the laptop won't run off the battery?
After you disconnect AC and it dies, can you turn it on while on battery?
After you disconnect AC and it dies, can you turn it on while on battery?
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
Re: T520 battery mystery
No. It's as if there is no power source.
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