Adopts smart battery to protect the circuit built-in current limiting protection safety valve overcharge discharge over current(short circuit) overheating protection accord with international safe standards. Uses high quality Lithium cell safe stable high capacity and long standby time. Do not contain mercury lead cadmium and other harmful substances in full compliance with environmental requirements. Features: the same standby with the original battery. Uses AAA grade imported Lithium cell ensure the high quality long service life safe and stable. The batteries have been independent decoding can display normal power stable voltage.