Rolls Battery 12 MD 325P
The Rolls Battery 12 MD 325P is a battery pack with a reserve capacity of 780 Minutes and a weight of 199.5 Lbs.
Last updated: 27 October 2026
Battery and charging
- Charging voltage range
- 14.7-15 V/cell @ 25°C (77°F)
- Battery type
- Flooded (table headed MARINE, FLOODED)
- Capacity, at the 20-hour rate
- 20 HR column: 325
- Reserve capacity
- 780 Minutes
- Minutes at 75 A
- 260 Minutes
- Cold cranking amps
- CCA @ -18°C (0°F): 1069
- 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): 1337
Row from the maker’s page: “Charge Voltage Range” | “14.7-15 V/cell @ 25°C (77°F)”
Source: rollsbattery.com/battery/12-md-325p
“FLOODED MODEL BCI 20 HR CCA MCA DIMENSIONS WEIGHT”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Reserve Capacity (RC @ 25A)” | “780 Minutes”
Source: rollsbattery.com/battery/12-md-325p
Row from the maker’s page: “Reserve Capacity (RC @ 75A)” | “260 Minutes”
Source: rollsbattery.com/battery/12-md-325p
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Self-Discharge Rate” | “5%-10% per month at 25°C (77°F)”
Source: rollsbattery.com/battery/12-md-325p
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Size and fit
- Weight
- 199.5 Lbs
- Overall dimensions
- L x W x H incl. terminal: 47.0 cm x 38.3 cm x 28.1 cm
- Terminals
- Flag
- Stated weight
- Weight: 90.5 kg
- Terminal thread
- 5/16"-18
- Group the maker sells it as
- BCI column: 2 x 27
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 18.50” x 15.06” x 11.06” 199.5 Lbs”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 kg”
Source: rollsbattery.com/wp-content/uploads/2019/11/MARINE-sheet.pdf
Row from the maker’s page: “Terminal Type” | “Flag”
Source: rollsbattery.com/battery/12-md-325p
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 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/12-md-325p
“SERIES 4000 12 MD 325P 2 x 27 325 1069 1337 47.0 cm x 38.3 cm x 28.1 cm 90.5 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
- 12 MD 325P | Rolls BatteryArchived document
Source: rollsbattery.com/battery/12-md-325p
Retrieved October 16, 2026