My laptop has a few strange issues.
# It shuts off without warning at around 20%
# 100-90% lasts a lot longer than any other percentage range
# Battery percentage generally unreliable
# Battery voltage is 15.2v whatever the state of charge is
# serial number of the battery is 2 according to windows
I have tried many things:
# 4 different batteries 3 original toshiba batteries and 1 Unofficial
# 2 Different Mo-Bo
# Updating battery interface driver
# Linux also has the same behaviour