Rolls Battery S12 27
The Rolls Battery S12 27 is a battery pack with a nominal voltage of 12, a reserve capacity of 185 Minutes and a weight of 54 Lbs.
Last updated: 27 October 2026
Battery and charging
- Charging voltage range
- 2.45-2.5 V/cell @ 25°C (77°F)
- Voltage
- 12
- Case material
- ABS
- Number of cells
- 6
- Battery type
- Flooded (table headed MARINE, FLOODED)
- Recommended charging
- 15 A
- Capacity, at the 20-hour rate
- 20 HR column: 105
- Reserve capacity
- 185 Minutes
- Maximum charge current, as the maker labels it
- 25 A
- Minutes at 75 A
- 53 Minutes
- Cold cranking amps
- CCA @ -18°C (0°F): 660
- Float voltage
- 2.25 V/cell @ 25°C (77°F)
- How fast it loses charge sitting idle
- 5%-10% per month at 25°C (77°F)
- Cranking amps, hot, marine and cold
- MCA @ 0°C (32°F): 825
“Charge Voltage Range 2.45-2.5 V/cell @ 25°C (77°F)”
Source: rollsbattery.com/battery/s12-27
Row from the maker’s page: “Volts” | “FLA SERIES 4000” | “12”
Source: rollsbattery.com/battery/s12-27
Row from the maker’s page: “Container” | “ABS”
Source: rollsbattery.com/battery/s12-27
Row from the maker’s page: “Cells” | “FLA SERIES 4000” | “6”
Source: rollsbattery.com/battery/s12-27
“FLOODED MODEL BCI 20 HR CCA MCA DIMENSIONS WEIGHT”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Recommended Charge Current” | “15 A”
Source: rollsbattery.com/battery/s12-27
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Reserve Capacity (RC @ 25A)” | “185 Minutes”
Source: rollsbattery.com/battery/s12-27
Row from the maker’s page: “Maximum Charge Current” | “25 A”
Source: rollsbattery.com/battery/s12-27
Row from the maker’s page: “Reserve Capacity (RC @ 75A)” | “53 Minutes”
Source: rollsbattery.com/battery/s12-27
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Float Voltage Range” | “2.25 V/cell @ 25°C (77°F)”
Source: rollsbattery.com/battery/s12-27
“Self-Discharge Rate 5%-10% per month at 25°C (77°F)”
Source: rollsbattery.com/battery/s12-27
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Size and fit
- Weight
- 54 Lbs
- Overall dimensions
- L x W x H incl. terminal: 32.1 cm x 17.1 cm x 23.8 cm
- Terminals
- Terminal type: DT
- Stated weight
- Weight: 24.5 kg
- Terminal thread
- 5/16"-18
- Group the maker sells it as
- BCI column: 27
“SERIES 4000 S12 27 27 105 660 825 12.63” x 6.75” x 9.38” 54 Lbs”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
“S12 27 105 27 DT 12.63” | 32.1cm 6.75” | 17.1cm 9.38” | 23.8cm 54lbs | 24.5kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/Rolls-Battery-Renewable-Energy.pdf
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Size & Thread” | “5/16"-18”
Source: rollsbattery.com/battery/s12-27
“SERIES 4000 S12 27 27 105 660 825 32.1 cm x 17.1 cm x 23.8 cm 24.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Sources
- Archived document
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Retrieved October 8, 2026
- S12 27 | Rolls BatteryArchived document
Source: rollsbattery.com/battery/s12-27
Retrieved October 16, 2026
- Archived document
Source: rollsbattery.com/wp-content/uploads/2019/11/Rolls-Battery-Renewable-Energy.pdf
Retrieved October 8, 2026