DG (deep cycle GEL) series batteries are pure gel batteries designed for frequent cyclic charging and discharging, as well as standby operation. DG series batteries are designed for solar and wind energy, medical equipment, marine systems, telecommunications equipment, UPS systems, and other applications. Number of full cycles - 450 Specifications: Number of elements: 6 Voltage: 12 V Nominal capacity: 260 Ah at 20-hour discharge to 1.75 V per element at 25 ° C Internal resistance: 4.5 mOhm Terminal type: F14 (M8) Maximum discharge current: 2600 A (5 seconds) Shelf life: 15 years Maximum charging current: 52 A Weight: 71.4 kg (Tolerance ± 5.0%) Test capacity: C3 177.6 AHC5 200.0 AHC10 229.0 AHC20 260.0 AH Float charge voltage: 13.6 V ~ 13.8 V at 25 ° C Temperature compensation: -3 mV / ° C / cellCyclic charging voltage: 14.2V~14.4V@25°CTemperature compensation: -4mV/°C/cellOperating temperature range:Discharge:-40°C~60°CCharge:-20°C~50°CStorage:-40°C~60°CNormal operating temperature range: 25±5°CCase material: A.B.S. UL94-HB, UL94-V0CSelf-discharge: RITAR rechargeable 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.