The HRL12150WFR is a sealed lead-acid, maintenance-free battery with an extended life of up to 10 years in float mode. It is designed for high efficiency at high discharge currents in uninterruptible power supplies and other systems where the ability to maintain a high current is critical. Like all CSB batteries, it is rechargeable, highly efficient and maintenance-free • Type: AGM • Terminals: M5 bolt • Capacity: 38 Ah • Voltage: 12 V • Max. discharge current: 225 A (5 sec) • Internal resistance: 7 mOhm • Permissible max. Charging current: 15 A• Charging voltage in buffer mode: 13.5 - 13.8 volts / battery at 25 ° C• Charging voltage in cyclic mode: 14.4 - 15.0 volts / battery at 25 ° C• 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• Dimensions: 196x130x172 mm• Weight: 11.75 kg (Tolerance ± 5.0%)