Whisper Power AGM Battery - 12V / 55AhThe WhisperPower AGM Battery 12 V – 55 Ah is the most economical, maintenance-free battery designed for long life. WhisperPower 12 V – 260 Ah AGM batteries are based on VRLA technology (Valve Regulated Lead Acid), meaning they require little ventilation, do not have to be positioned upright and do not require any maintenance. - 55 Ah, 12 VDC
- Suitable for medium sized inverters
- Power supply for entire DC installation
- Powering pumps and winches
- Suitable for marine, mobile and solar energy systems- and as a starter battery.
TECHNICAL SPECIFICATIONS Length x width x height - 229 × 138 × 210 mm (9" x 5.4" x 8.3" inch) Weight ± 10% - 18.0 kg / 39.7 lb. Nominal capacity - 55 Ah C10* or C20 - C10 Nominal voltage - 12,0 VDC Terminal type - M6 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 1.75 VDC/CEL 20 hours discharge - 58.6Ah 10 hours discharge - 55.0 Ah 5 hours discharge - 44.5 Ah Peukeurt Coefficient - 1.21<P<1.24 Usage at 25 A discharge - 92 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) - 550 A Cyclic life at 80% discharge - 400 Internal resistance (approx.) - 6,0m Ω |