Motorola's rapid-rate, Self Calibration system streamlines and automates battery maintenance for APX N50 and APX N30 portable radios. Talk time and the life cycle of batteries are optimized as the need for manual maintenance is not required. Advanced conditioning feature allows batteries to be left in the charger for extended periods of time and remain fully charged without causing damage to the battery or charger. An indicator light shows the charging process status and turns yellow when in reconditioning mode. Covered by 12-month warranty.