01-04-2020 09:52 PM
Just plug in per page 63 of manual.
Temporarily disable battery for servicing the computer. After selecting this item, the computer will be automatically powered off. The computer is then ready to be serviced. Note: The battery will be automatically re-enabled when the ac power adapter is reconnected to the computer.
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T490, TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
Retired 385D, A20p, A21p