Application:• uninterruptible power supplies• in solar and wind installations;• in telecommunications and industrial equipment;• in power plants;• in backup lighting systems• as part of video surveillance, alarm, access control systems• in networks of fire and security automated systems Characteristics:• Voltage: 12 V• Nominal capacity: 9 A / h at a 20-hour discharge to 1.75 V per element at 25 ° C• Internal resistance 17 mOhm• Terminal type: F2• Maximum discharge current: 135 A (5 seconds)• Maximum charging current: 2.7 A• Charging voltage in buffer mode: 13.5 V ~ 13.8 V at 25 ° C• Charging voltage in cyclic mode: 14.4 V ~ 15 V at 25 ° C• Operating temperature range:- discharge: -15 ° C ~ 50 ° C- charge: 0°C ~ 40°C- Storage: -15°C ~ 40°C• Normal operating temperature range: 25 ± 5 ° C• Shell material: plastic• Self-discharge: - Can be stored for up to 6 months at 25 ° C, and then recharging is recommended. The monthly self-discharge rate is less than 3% at 25 ° • C.• Weight: 2.45 kg (Tolerance ± 5.0%)• Dimensions (LxWxH): 151x65x99 mm