WhisperPower 2V – 525 Ah (OPzV valve regulated) batteries are designed for situations needing prolonged deep charging and discharging cycles. Fully maintenance-free, these GEL batteries utilize tubular plate technology to hold the electrolyte. They are popular in emergency power systems, marine and mobile battery banks, and UPS setups.
- Designed to last for over 10 years
- Suitable for high charge current (50% of nominal capacity)
- Ideal battery for large battery banks (600 to 8000 Ah)
- Best option for intensively used heavy duty inverter(s)
- Suitable for a large number of charge cycles (1200 to 3000 depending on dis- charge level)
- 7 year warranty (Restricted to cycles)
Product specifications
| ARTICLE NUMBER |
| 40290038 |
GEL Battery 2 V – 525 Ah |
| TECHNICAL SPECIFICATIONS |
| Length x width x height |
166 × 206 × 506 mm (6.5″ x 8.1″ x 19.9″ inch) |
| Weight +/- 10% |
39.0 kg (86 lb.) |
| Nominal capacity (C10, cel 1.80 V, 20°C) |
525 Ah |
| Nominal voltage |
2 VDC |
| Terminal type |
2 × M8 |
| CHARGE / DISCHARGE PARAMETERS |
| Bulk charge voltage (V/cel) |
2.42 VDC at 20°C |
| Float voltage (V/cel) |
2.25 VDC at 20°C |
| Initial charge current (A) |
200 A |
| Temperature ratio |
-4mv/cel/°C |
| Recommended discharge voltage for 10 hours discharge (V/cel) |
1,80 VDC/cel |
| Recommended discharge voltage for 1 hour discharge (V/cel) |
1,65 VDC/cel |
| NOMINAL CAPACITY AT 20°C |
| NOMINAL CAPACITY AT 20°C |
UP TO 1.80 VDC/CE |
| 10 hours discharge |
525 Ah |
| 5 hours discharge |
450 Ah |
| 1-hour discharge |
220 Ah |
| Peukeurt Coefficient |
1,21<P<1,23 |
| Usage at 25 A discharge |
18 h |
| Self discharge |
Less than 3% per month at 20°C |
| Storage time |
OpzV batteries can be stored for up to 6 months at 20°C, recommended to charge before use. |
| BATTERY PARAMETERS |
| Cyclic life at 80% discharge |
1250 |
| Internal resistance (approx.) |
0.38 mΩ |
