High Capacity: Kastar high capacity battery will power your device for much longer. Specification: Battery Type: Ni-MH; Battery Voltage: 4.8V; Battery Capacity: 2200mAh. Safety Assurance: Kastar add mix-protection additive to the cathode of batteries, protect the material from degradation in the progress of charge and discharge, extend lifespan up to 1200 cycles. Environmental Protection: Ni-MH eco-friendly cell, doesn't contain Hg/Cd/Pb, makes no pollution to the environment, and using DBCK steel shell which can protect the battery against explosion due to overpressure.