The batteries are designed for backup power supply systems in uninterruptible power supplies, used in telecommunication systems of industrial, office and other institutions. Specifications: Number of elements: 6 Voltage: 12 V Nominal capacity: 7.2 A / h at a 20-hour discharge to 1.75 V per element at 25 ° C Weight: 1.99 kg (Tolerance ± 5.0%) Internal resistance: 25 mOhm Terminal type: F2 Maximum discharge current: 72 A (5 seconds) Short-circuit current 260 A Shelf life: 6-8 years Maximum charging current: 0.72 A Test capacity: C3 5.59 AHC5 6.31 AHC10 6.76 AHC20 7.26 AH Charging voltage in buffer mode: 13.7 V ~ 13.9V@25°C Temperature Compensation: -3mV/°C/cell Cycle Charge Voltage: 14.6V~14.8V@25°C Temperature Compensation: -4mV/°C/cell Operating Temperature Range: Discharge: -20°C~60°C Charge: 0°C~50°C Storage: -20°C~60°C Normal Operating Temperature Range: 25±5°C Case Material: A.B.S. UL94-HB, UL94-V0C Freeze Discharge: RITAR Rechargeable Battery Regulated Lead Acid (VRLA) batteries 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. Please charge the batteries before use. Dimensions with packaging (154 * 68 * 103 mm) Device size (151 * 65 * 100 mm) Please note! Failure to comply with the voltage and charge/discharge currents may damage the battery and void the warranty.