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Whisper Power Deep Cycle Gel Battery - 12V/225Ah Deep cycle GEL battery with 12 years floating design life. Superior design for frequent cyclic discharge applications under extreme temperatures. Strong grid construction to ensure reliability under frequent deep discharge use. - Deep cycle “long life” battery
- For heavy duty service & extended cycle life
- Maintenance free, recombination (VRLA) type
- Shock resistant, heavy duty casing & Limited ventilation needed
- Transportation by air approved
TECHNICAL SPECIFICATIONS
Length x width x height - 522 x 240 x 219 mm (20.6" x 9.5" x 8.6" inch)
Weight +/- 10% - 65.0 kg (143.3 lb.)
Nominal capacity (C20) - 225 Ah
Nominal voltage - 12.0 VDC
Terminal type - M8 stainless steel
Number of cells - 6
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) - 45.0 A
Temperature cut-off ratio - 4mv/cell/°C
Discharge cut off voltage 100% depth of discharge d.o.d. - 1.75 VDC @ (A) <= 0.2 C1.70 VDC @ 0.2 C (A) <= 1.0 C1.65 VDC @ (A) >= 1.0 C
Rated Capacity @ 25°C - rate to 1.80 VDC per cell
20 hrs discharge - 225.0 Ah
10 hrs discharge - 209.0 Ah
5 hrs discharge - 181.0 Ah
Peukert Coefficient - 1.21<P<1.24
Time reserve minutes 25 amps discharge - 450 minutes
Self discharge - Less than 3% per month @ 25°C
Storage time - GEL-power batteries can be stored for maximum6 months at 25°C, Charging recommended before using.
Cranking amps @ 25°C ( 5 sec) - 2250 A
Cycle life at 80% of D.O.D - 600
Internal resistance Approx. - 4.0 mΩ | 
