HQRP 1150mAh Battery compatible with Garmin Nuvi 660 / 660 FM / 670 / 680 GPS Replacement plus HQRP Universal Screen Protector HQRP&reg; Replacement Battery plus HQRP&reg; Universal Screen Protector; Battery Type: Li-Polymer rechargeable battery; Voltage: 3.7v; Capacity: 1150mAh; 100% compatible with Original Battery and Charger devices. 200 days warranty!