Replacement Battery for: Sena SMH5, SMH5-FM Motorcycle Bluetooth Headset, Helmet intercom, Battery Model: Sena ICP40/25/40P 100% Compatible with original battery; 180 days warranty Capacity: 500mAh; Nominal Voltage: 3.7V Battery Type: Li-ion Polymer battery; Safe and reliable battery certified by UL, CE, UN38.3, RoHS Over 300 times cycle life; Long working time