Satellite P50t-A - Forced hibernation even with power connected

Hello,
I have a Satellite P50t-A where the battery appears to be failing. It is reading 0% and the charger is periodically charger is turning on and off. When it stops charging (about every 5 mins), the computer run for a period then enters forcefully enters hiberation. This hiberation occurs eveen when the power is connected. Why is it entering hiberation even when the power is connected? Why does battery status has precedence over a stable power?
I have ordered a new battery and waiting for its arrival. In the interim, how to force the laptop to run on power (ignore the battery status)? If I open up the laptop and remove the battery, will it run with the power connected and the battery removed?
Regards
Graham

Update. Disassmebled laptop and disconnected the battery. It now powers up now and the battery monitor reports "no battery detected". After running it for a period, the forced hiberation no longer occurs.

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Satellite P50t-A - Forced hibernation even with power connected

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