Odyssey ODP-AGM27M
Last updated: 27 October 2026
Battery and charging
- Battery weight
- 59.7 (27.1)
- Voltage
- 12
- Capacity
- 85
- Rated charge cycles
- up to 400 cycles at 80% depth of discharge
- Case material
- Polypropylene
- Internal resistance
- 3.8 mΩ
- Cranking current
- 1500 A, 5-second pulse hot cranking amps (PHCA)
- Capacity, at the 20-hour rate
- 85
- Capacity, at the 10-hour rate
- 79 Ah at the 10-hour rate
- Reserve capacity
- 182
- Cold cranking amps
- 850
- Cranking amps, hot, marine and cold
975 A marine cranking amps (MCA)
odp-agm27m-battery-27m-850 · retrieved 8 October 2026
“MCA 975”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
amer-odyssey-batteries-for-marine-applications.pdf · retrieved 8 October 2026
“ODP-AGM27M 1500 975 85 182 12.5 (317) 6.8 (172) 8.8 (224) 8.2 (207) 60 (27.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
1150
Extreme Series Battery Specifications | ODYSSEY® Battery · retrieved 9 October 2026
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
- Marine hot pulse cranking amps (MHPCA)
- 1375 A marine hot pulse cranking amps (MHPCA)
- Marine pulse cranking amps (MPCA)
- 1125 A marine pulse cranking amps (MPCA)
- Hot cranking amps (HCA)
- 1150 A hot cranking amps (HCA)
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“ODP-AGM27M 1500 975 85 182 12.4 (316) 5.8 (147) 8.9 (225) 8.1 (206) 60 (27.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“up to 400 cycles at 80% depth of discharge”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“Construction Thin Plate Pure Lead (TPPL) Absorbed Glass Mat (AGM) Case Material Polypropylene”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“Internal Resistance (mΩ) 3.8”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“Pulse (5 second) Hot Cranking Amps (PHCA) 1500”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“10Hr Nominal Capacity (Ah) 79”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“ODP-AGM27M 1500 975 85 182 12.4 (316) 5.8 (147) 8.9 (225) 8.1 (206) 60 (27.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
The maker’s own documents give different figures
“MHPCA 1375”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“MPCA 1125”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“HCA 1150”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
Battery care and safety
- Operating temperature range
- -40°F (-40°C) to 140°F (60°C)
- Temperatures it may be stored in
- Optimum storage temperature 68°F / +20°C
- Short-circuit current
- 2400 A
“Operating temperatures: -40°F (-40°C) to 140°F (60°C) – Performance batteries”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“Optimum Storage Temperature 68°F / +20°C”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“Short Circuit (A) 2400”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
Size and fit
- Overall dimensions
12.50 in x 6.80 in x 8.80 in (container 8.20 in)
odp-agm27m-battery-27m-850 · retrieved 8 October 2026
“Length 12.50 in Width 6.80 in Height (terminals included) 8.80 in Height (container) 8.20 in”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
12.5 x 6.8 x 8.8 in (container 8.2)
amer-odyssey-batteries-for-marine-applications.pdf · retrieved 8 October 2026
“ODP-AGM27M 1500 975 85 182 12.5 (317) 6.8 (172) 8.8 (224) 8.2 (207) 60 (27.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
12.5 (318) 6.8 (173) 8.8 (224)
Extreme Series Battery Specifications | ODYSSEY® Battery · retrieved 9 October 2026
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
- Torque for the battery terminal nuts
- 200 (22.6)/100 (11.3) studs only
- Terminals
- SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.)
- Stated weight
- 60 (27.0)
The maker’s own documents give different figures
“Torque Spec in-lbs (Nm max) 200 (22.6)/100 (11.3) studs only”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“Terminal SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.)”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
“ODP-AGM27M 1500 975 85 182 12.4 (316) 5.8 (147) 8.9 (225) 8.1 (206) 60 (27.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
Identity
- Model code
- ODP-AGM27M
- What its maker sells it for
- Marine Dual Purpose
- UPC
- 635241140668
“ODP-AGM27M (ELT-AGM27M) 12 1500 1375 1125 850 1150 975 85 79 182 12.5 (318) 6.8 (173) 8.8 (224) 8.2 (208) 59.7 (27.1) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 3.8”
Source: odysseybattery.com/odyssey-battery-specifications
“ODYSSEY Marine Dual Purpose batteries are ideal for trolling, starting and for powering the many onboard electronic accessories common in today’s boats.”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
“UPC 635241140668”
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
Sources
- Archived document
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
Retrieved October 8, 2026
- Extreme Series Battery Specifications | ODYSSEY® BatteryArchived document
Source: odysseybattery.com/odyssey-battery-specifications
Retrieved October 9, 2026
- Archived document
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
Retrieved October 8, 2026
- Archived document
Source: odysseybattery.com/products/odp-agm27m-battery-27m-850
Retrieved October 8, 2026