SPECIFICATIONS
Nominal capacity (C10)
440 Ah (1.8 V cell, 20 °C)
Nominal voltage
2 VDC
Type
WhisperPower OPzV Valve Regulated batteries are extremely suitable for applications with extended charge / discharge cycles. They are fully maintenance free. WhisperPower GEL power batteries are based on tubular plate technology and the fixing of the elec
Weight (tolerance 1.5%)
33 Kg
Dimensions l*w*h [mm] (incl. terminals)
145*206*506 mm
Terminal type
M 8 / 2
CHARGE/DISCHARGE PARAMETERS
Boost Charge Voltage (V/cell)
2.35 VDC at 20°C
Floating voltage set point (V/cell)
2.25 VDC at 20°C
Initial charge current (A) 0.4 C10
150 A
Temperature cut-off ratio
-4 mv/cell/°C
Recommended End of Discharge voltage for 10-hr rate (V/cell)
1.80 VDC/cell
Recommended End of Discharge voltage for 1-hr rate (V/cell)
1.65 VDC/cell
RATED CAPACITY @ 20°C
 
Rate to 1.80 VDC per cell
10 hrs discharge
440 Ah
5 hrs discharge
370 Ah
1 hrs discharge
184 Ah
Peukert Coefficient
1.21<P<1.23
Time reserve minutes 25 amps discharge
15 hrs
Self discharge
Less than 2% per month @ 20°C
Storage time
OPzV-power batteries can be stored for maximum 6 months at 20°C. Charging recommended before using
BATTERY PARAMETERS
Cycle life at 80% of D.O.D
1250
Internal resistance Approx.
0.42 mΩ