WhisperPower Equipment
AGM Battery 12 V - 260 Ah
Maintenance-free 12 V, 260 Ah (C10) AGM VRLA battery for marine, mobile and solar systems and as a starter battery; 400 cycles at 80% DoD, 2600 A cranking current.
Description
The WhisperPower AGM Battery 12 V – 260 Ah is a maintenance-free VRLA (valve regulated lead-acid) battery designed for long service life. It needs little ventilation and does not have to be installed upright.
Applications
- Medium-sized inverters
- Power supply for the entire DC installation
- Pumps and winches
- Marine, mobile and solar energy systems; also usable as a starter battery
Technical data
- Part number: 40290064
- Capacity: 260 Ah (C10); 278 Ah (20 h); 220 Ah (5 h)
- Nominal voltage: 12.0 VDC, 6 cells; M8 terminals
- Float charge: 13.60–13.80 VDC; cyclic (absorption) charge 14.25–14.60 VDC at 25 °C
- Recommended maximum charge current: 40–50% of nominal capacity
- Reserve: 630 min at 25 A discharge
- Cranking current (5 s, 25 °C): 2600 A
- Cycle life: 400 at 80% DoD
- Self-discharge: <3% per month at 25 °C; internal resistance approx. 3.5 mΩ
- Dimensions: 520 x 268 x 220 mm; weight 74.0 kg
Specifications
| 40290064 | AGM Battery 12 V -260 Ah |
|---|---|
| Length x width x height | 520 x 268 x 220 mm (20.5" x 10.6" x 8.7" inch) |
| Weight ± 10% | 74.0 kg (163.1 lb.) |
| Nominal capacity | 260 Ah |
| C10* or C20 | C10 |
| Nominal voltage | 12,0 VDC |
| Terminal type | M8 rvs |
| Number of cells | 6 |
| Constant charge voltage (IU, float) | 13.60 .. 13.80 VDC at 25oC |
| Cyclic charge voltage (IUU, absorption) | 14.25 .. 14.60 VDC at 25oC |
| Maximum recommended charge current (higher possible) | 40 to 50% of nominal capacity |
| Temperature ratio | -4mv/cel/°C |
| Discharge voltage | 1.75 VDC @ (A) ≤ 0.2°C • 1.70 VDC @ 0.2°C (A) ≤ 1.0°C |
| Full discharge (100% DOD) | 1.65 VDC @ (A) ≥ 1.0°C |
| Nominal 25°C | UP TO 1.80 VDC/CEL |
| 20 hours discharge | 278.0 Ah |
| 10 hours discharge | 260.0 Ah |
| 5 hours discharge | 220.0 Ah |
| Peukeurt Coefficient | 1.21<P<1.24 |
| Usage at 25 A discharge | 630 min |
| Self discharge | Less than 3% per month at 25°C |
| Storage time | AGM batteries can be stored for up to 6 months at 25°C, recommended to charge before use |
| Inrush current at 25°C (5s) | 2600 A |
| Cyclic life at 80% discharge | 400 |
| Internal resistance (approx.) | 3,5m Ω |
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