I powered up the NB after 8 hours charging at 8:38am
there was a crash around 11:30am
the reason unknown, docs not saved
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
this happened when I put the system to sleep
I had my lunch
had my nap
now its 3:19pm, battery is 28%
its my typical usage pattern
3:29PM 25%
3:55PM 11%
ok, DONE my testing
almost 4 hours of battery working time
this verified another user's comment this model of Dell L5330 battery is not efficient
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