| Battery charging circuitry can be fairly complicated - especially
if the charging circuit stores as data, the amount
of energy supplied to the battery (in order to predict the
amount of energy left).
Can the charging circuit be fooled if battery packs are swapped
during the charging process? With two batteries and no
external rechargert you need to charge up one battery,
swap it and then charge up the second.
Gim
PS - I was able to use a VP535 for 2.5 hours running Word and
Excel on a trip. I made sure that the laptop was fully
charge a few minutes before boarding the plane.
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