Bravo NiMH Electric Pump Battery for BP, BTP Analog or Digital Bravo BTP Extended NiMh Battery Pack Kit - Can be used with Bravo BTP and BP Pump models *(Current Version with Large Square Battery Connector). Easy connection with simple recharge jack-plug in the sockets fitted on the inflators Battery charger included Can be inserted in the bag supplied with BTP and BP models. Ni-Mh battery which gives over 800 recharge cycles (2 times more than lead batteries). Plus Extended Operation Time. Battery without memory effect. Less sensitive to charge cycles & depletion levels compared to Lead-Acid