Odyssey ODX-AGM31M
Last updated: 27 October 2026
Battery and charging
- Battery weight
- 77.8 (35.3)
- Voltage
- 12
- Capacity
- 100
- Rated charge cycles
- up to 400 cycles at 80% depth of discharge
- Case material
- Polycarbonate Blend
- Internal resistance
- 2.2 mΩ
- Cranking current
- 2150 A, 5-second pulse hot cranking amps (PHCA)
- Capacity, at the 20-hour rate
- 103
- Capacity, at the 10-hour rate
- 98 Ah at the 10-hour rate
- Reserve capacity
- 220
- Cold cranking amps
- 1150
- Cranking amps, hot, marine and cold
1370 A marine cranking amps (MCA)
odx-agm31m-battery-31m-pc2150st · retrieved 8 October 2026
“MCA 1370”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
amer-odyssey-batteries-for-marine-applications.pdf · retrieved 8 October 2026
“ODX-AGM31M 2150 1370 103 220 13.0 (330) 6.8 (172) 9.9 (252) 8.9 (226) 78 (34.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
1545
Extreme Series Battery Specifications | ODYSSEY® Battery · retrieved 9 October 2026
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
- Marine hot pulse cranking amps (MHPCA)
- 1950 A marine hot pulse cranking amps (MHPCA)
- Marine pulse cranking amps (MPCA)
- 1625 A marine pulse cranking amps (MPCA)
- Hot cranking amps (HCA)
- 1545 A hot cranking amps (HCA)
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
“ODX-AGM31M 2150 1370 100 220 13.0 (331) 6.8 (173) 9.4 (239) 8.6 (218) 78 (35.5)”
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/odx-agm31m-battery-31m-pc2150st
“Case Material Polycarbonate Blend*”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“Internal Resistance (mΩ) 2.2”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
“Pulse (5 second) Hot Cranking Amps (PHCA) 2150”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
“10Hr Nominal Capacity (Ah) 98”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
“ODX-AGM31M 2150 1370 100 220 13.0 (331) 6.8 (173) 9.4 (239) 8.6 (218) 78 (35.5)”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
The maker’s own documents give different figures
“MHPCA 1950”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
“MPCA 1625”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
“HCA 1545”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
Battery care and safety
- Operating temperature range
- -40°F (-40°C) to 176°F (80°C)
- Temperatures it may be stored in
- Optimum storage temperature 68°F / +20°C
- Short-circuit current
- 5000 A
“Operating temperatures: -40°F (-40°C) to 176°F (80°C) – Extreme 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/odx-agm31m-battery-31m-pc2150st
“Short Circuit (A) 5000”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
Size and fit
- Overall dimensions
13.00 in x 6.80 in x 9.90 in (container 8.90 in)
odx-agm31m-battery-31m-pc2150st · retrieved 8 October 2026
“Length 13.00 in Width 6.80 in Height (terminals included) 9.90 in Height (container) 8.90 in”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
13.0 x 6.8 x 9.9 in (container 8.9)
amer-odyssey-batteries-for-marine-applications.pdf · retrieved 8 October 2026
“ODX-AGM31M 2150 1370 103 220 13.0 (330) 6.8 (172) 9.9 (252) 8.9 (226) 78 (34.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
13 (330) 6.8 (173) 9.9 (251)
Extreme Series Battery Specifications | ODYSSEY® Battery · retrieved 9 October 2026
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
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
77.80 lbs
odx-agm31m-battery-31m-pc2150st · retrieved 8 October 2026
“Weight 77.80 lbs”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
78 lb (34.0 kg)
amer-odyssey-batteries-for-marine-applications.pdf · retrieved 8 October 2026
“ODX-AGM31M 2150 1370 103 220 13.0 (330) 6.8 (172) 9.9 (252) 8.9 (226) 78 (34.0)”
Source: odysseybattery.com/wp-content/uploads/sites/2/amer-odyssey-batteries-for-marine-applications.pdf
78 (35.5)
odyssey-batteries-for-recreational-vehicles.pdf · retrieved 8 October 2026
“ODX-AGM31M 2150 1370 100 220 13.0 (331) 6.8 (173) 9.4 (239) 8.6 (218) 78 (35.5)”
Source: odysseybattery.com/wp-content/uploads/sites/2/odyssey-batteries-for-recreational-vehicles.pdf
- Group the maker sells it as
- Group 31
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/odx-agm31m-battery-31m-pc2150st
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
Source: odysseybattery.com/odyssey-battery-specifications
“Terminal SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.)”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
The maker’s own documents give different figures
“Group 31 with brass SAE posts”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
Identity
- Model code
- ODX-AGM31M
- What its maker sells it for
- Marine Dual Purpose
- UPC
- 635241140675
“ODX-AGM31M (31M-PC2150) 12 2150 1950 1625 1150 1545 1370 103 98 220 13 (330) 6.8 (173) 9.9 (251) 8.9 (226) 77.8 (35.3) SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) 200 (22.6)/100 (11.3) studs only 2.2”
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 635241140675”
Source: odysseybattery.com/products/odx-agm31m-battery-31m-pc2150st
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/odx-agm31m-battery-31m-pc2150st
Retrieved October 8, 2026