Motorola T8160 Manual page 17

Charging Batteries
Expert Performance (E•P ® )Charging System
The E•P system enables your phone's built-in charger to
communicate with installed batteries and tailor its charging
cycle to optimize performance. If you see
Invalid Battery
when you power up the phone, the built-in charger is not able to
communicate with the battery and cannot charge it. There are
several possible reasons for this message. The most likely one is
that the battery is not a Motorola original and it does not have
the appropriate E•P technology.
We recommend that you use only Motorola original batteries
and accessories and that you store your batteries in their
protective clips when not in use.
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