HQRP Battery compatible with Philips Pronto TSU3000, TSU3500, TSU6000, TSU7000, TSU7500 Remote Control plus Coaster HQRP&reg; Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V, Capacity: 800 mAh, Ni-Mh; These batteries have no memory effect so they can be recharged when needed without loss of capacity; 100% compatible with Original Battery and Charger Device; 200 Days warranty!