METHOD AND APPARATUS FOR USE WITH A PORTABLE POWER SOURCE

摘要

An apparatus ( 10 ) having a portable power source ( 11 ) can make use of a plurality of differing charge depleted threshold values (and, in a preferred embodiment, corresponding visual charge-remaining indicators) to determine what level of charge remains in the portable power source ( 11 ). This in turn permits the recharging advice as suggested by the visual indicator to better track and reinforce the ordinary recharging behaviors of a given user. So configured, the total lifetime of the portable power source may be extended while also ensuring that the portable power source will be fully charged upon completion of each charging cycle.