You can see the battery power from the blinking pattern of the LED on the charging cradle when placing or removing earbuds in/from the charging cradle.   0~25%        White LED blinks once         25~50%      White LED blinks twice         50~75%      White LED blinks three times         75~100%    White LED blinks four times         Charging Complete: White LED stays on *Number of available CR5 charges using charging cradle (500 mAh): 3~4 times (with fully charged charging cradle) *When the battery of earbuds is not enough you can hear voice prompt "Low Battery"