SPECIFICATIONS
Nominal capacity (C10)
260 Ah
Nominal voltage
12 VDC
Type
Deep cycle Absorbed Glass Mat battery with 10 years floating design life, specially designed for frequent cyclic discharge usage. By using strong grid and specific paste plate, gives the battery 30% more cyclic life. Applicable for marine, mobile and PV e
Weight (tolerance 1.5%)
74 Kg
Dimensions l*w*h in mm (excl. terminals)
520*268*220 mm
Terminal type
M8 stainless steel
Number of cells
6
CHARGE/DISCHARGE PARAMETERS
Constant voltage Charging (IU, float)
13.60 to 13.80 VDC @ 25C
Cyclic Charging ( IUU, absorption)
14.25 to 14.60 VDC @ 25 C
Recommended charging current limit (higher possible)
40 - 50% of nominal capacity
Temperature cut-off ratio
-4mv/cell/°C
Discharge cut off voltage
1.75 VDC @ (A) <= 0.2 C
 
1.70 VDC @ 0.2 C (A) <= 1.0 C
100% depth of discharge d.o.d.
1.65 VDC @ (A) >= 1.0 C
RATED CAPACITY @ 25°C
20 hrs discharge
278 Ah
10 hrs discharge
260 Ah
5 hrs discharge
220 Ah
Peukert Coefficient
1.21<P<1.24
Time reserve minutes 25 amps discharge
630 minutes
Self discharge
Less than 3% per month @ 25°C
Storage time
AGM-power batteries can be stored for maximum 6 months at 25°C. Charging recommended before using
BATTERY PARAMETERS
Cranking amps @ 25°C ( 5 sec)
2600 A
Cycle life at 80% of D.O.D
400
Internal resistance Approx.
3.5 mΩ
ACCESSORIES
40290099
Battery pole suitable for the WhisperPower AGM and GEL batteries >_ 100Ah - complete with M8 bolt
40290310
Battery consumption meter: WBM-Basic
40290311
Battery consumption meter: WBM-Pro includes ‘Time remaining’ function
40290312
Battery consumption meter: WBM-Pro HV (High Voltage)