The new-generation button cell in an environment-friendly Nickel Metal Hydride technology for a wide range of applications. Can be used as memory batteries (backup), or in communications equipment, computers and consumer electronics. Without soldering tag. Battery & PSU technology: NiMH Battery size: CP300H Battery type (category): Button cell (rechargeable) Capacity (mAh, Ah): 300 mAh Dimensions, height: 7.5mm Dimensions, Ø: 25.1mm Rechargeable: Yes Voltage: 1.2V Weight: 11 g .