300mAh Ni-MH BP12RT Battery DOGTRA Receiver 1800, DOGTRA Receiver 1900, DOGTRA Receiver 2200 High Quality, high capacity, light weight rechargeable battery No memory effect. Can be charged or discharged as needed without loss of capacity Overcharge protection, with built-in battery life microchip Compatible Models: DOGTRA Receiver 1800, DOGTRA Receiver 1900, DOGTRA Receiver 2200 Compatible Part #s: BP12RT, GPRHC043M016