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  • Vendor:

    Odyssey

ODX-AGM31R

$571.99
$571.99
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ODYSSEY Extreme Battery

ODX-AGM31R

(31R-PC2150S)
(Group 31 with SS 3/8 inch threaded stud terminals)

The ODYSSEY Extreme ODX-AGM31R is a BCI Group 31R Thin Plate Pure Lead (TPPL) AGM battery for working vehicles whose loads never fully shut off: emergency vehicles, work trucks with liftgates, winches, or plows, and fleets running telematics, security camera systems, utility lamps, 12V power receptacles, CPAP circuits in sleeper cabs, and refrigerators or coolers that keep drawing after shutdown.

If you are looking for a Group 31R battery around 1150 CCA and 103 Ah (20-hour) with 220 minutes of reserve capacity, the ODX-AGM31R is the current version of the legacy 31R-PC2150S part number.

Small loads add up: per EnerSys parasitic-draw guidance and TMC RP140A, a combined 5-amp draw over a 60-hour weekend equals a 300 Ah discharge. A weekend sit has little impact, but a week of continuous draw can pull a battery below 10.5 volts, and if that happens routinely, performance and life are impacted. The ODX-AGM31R is built for exactly that duty: the highest cranking output in the WCB Group 31R lineup, deep-discharge recovery, extreme vibration resistance, fast recharge, and up to 400 cycles at 80% depth of discharge per EnerSys published ratings.

Group 31R is an ODX-only group: no ODP or standard AGM equivalent exists, and the ODX-AGM31R is the battery WCB carries for it. For emergency vehicles, mission-critical uptime, and vehicles that cannot afford a no-start, ODYSSEY Extreme is the floor — for daily drivers with stock electrical loads, a standard-duty battery covers the application. The ODX-AGM31R is an automotive and commercial battery and is not positioned for powersport applications.

Confirm your vehicle’s fitment with WCB’s battery finder at wcbatteries.com.

View Product Details

Dimensions

Length13.0 in
Width6.8 in
Height (terminals incl.)9.5 in
Height (container)8.6 in
Weight77.8 lbs

General

Battery TechnologyTPPL AGM
BCI Group Size31R
Warranty4 years

Electrical

Voltage12 V
Cold Cranking Amps (CCA)1150 A
Pulse HCA 5sec (PHCA)2150 A
Nominal Capacity (20Hr)103 Ah
Reserve Capacity220 min
Terminal Type3/8-16" Stud
Operating Temperature-40°F to 176°F
Cycle Life at 80% DoD400 cycles
Also known as: 31R-PC2150S

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✓ Best for

Working vehicles that take a BCI Group 31R battery and whose loads never fully shut off: emergency vehicles (police, fire, ambulance), work trucks with liftgates, winches, or plows, and fleets running telematics, security camera systems, utility lamps, 12V power receptacles, CPAP circuits in sleeper cabs, and refrigerators or coolers that keep drawing after shutdown.
ODYSSEY Extreme is the floor for emergency vehicles, mission-critical uptime, and vehicles that cannot afford a no-start. The ODX-AGM31R is the current version of the legacy 31R-PC2150S part number.
Group 31R is an ODX-only group: no ODP or standard AGM equivalent exists, and the ODX-AGM31R is the battery WCB carries for it.

✕ Not for

Not for powersport applications — the ODX-AGM31R is an automotive and commercial battery.

→ Intended for

Fleet manager, upfitter, or owner of a working vehicle in BCI Group 31R whose duty cycle keeps drawing after shutdown, for whom a no-start is an operational failure, not an inconvenience.

A Group 31R battery uses the standard BCI Group 31 case size with the terminal positions reversed. The Odyssey Extreme ODX-AGM31R is a TPPL (Thin Plate Pure Lead) AGM in that layout — rated 1150 CCA, 103 Ah (20-hour), and 220 minutes of reserve capacity, with 3/8-16 in. stud terminals and a rated operating range of -40°F to 176°F. The TPPL (Thin Plate Pure Lead) AGM design uses absorbed electrolyte for vibration resistance and consistent voltage output under sustained accessory loads. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. West Coast Batteries ships nationwide — confirm your exact fitment with the battery finder at wcbatteries.com.
The ODX-AGM31R is built on the Group 31 footprint with the terminal positions reversed relative to a standard Group 31, so cables reach correctly in trays laid out for the 31R orientation. It is rated 1150 CCA, 103 Ah (20-hour), and 220 minutes of reserve capacity, with 3/8-16 in. stud terminals and a rated operating range of -40°F to 176°F. The TPPL (Thin Plate Pure Lead) AGM design uses absorbed electrolyte for vibration resistance and consistent voltage output under sustained accessory loads. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. West Coast Batteries ships nationwide — confirm your exact fitment with the battery finder at wcbatteries.com.
The Odyssey Extreme ODX-AGM31R. The ODX-AGM31R is built on the Group 31 footprint with the terminal positions reversed relative to a standard Group 31, so cables reach correctly in trays laid out for the 31R orientation. Specs match the Group 31 Extreme: 1150 CCA, 103 Ah (20-hour), 220 minutes of reserve capacity, and a rated operating range of -40°F to 176°F. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. West Coast Batteries ships nationwide — confirm your exact fitment with the battery finder at wcbatteries.com.
The Odyssey Extreme ODX-AGM31R — a TPPL AGM rated 1150 CCA, 103 Ah (20-hour), and 220 minutes of reserve capacity, with 3/8-16 in. stud terminals and a rated operating range of -40°F to 176°F, built for cranking plus loads that keep drawing after the ignition is off — telematics, CPAP circuits, satellite units, in-cab refrigerators and coolers, utility lamps, liftgates, or 12V accessories — in the reversed Group 31 layout. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. West Coast Batteries ships nationwide — confirm your exact fitment with the battery finder at wcbatteries.com.
For a Group 31R application with high parasitic draw — loads that keep drawing after the ignition is off such as telematics, CPAP circuits, satellite units, in-cab refrigerators and coolers, utility lamps, liftgates, or 12V accessories — the Odyssey Extreme ODX-AGM31R is the deeper-reserve choice: 1150 CCA, 103 Ah (20-hour), 220 minutes of reserve capacity, 3/8-16 in. stud terminals, and a rated operating range of -40°F to 176°F. The TPPL (Thin Plate Pure Lead) AGM design uses absorbed electrolyte for vibration resistance and consistent voltage output under sustained accessory loads. Terminal positions are reversed relative to a standard Group 31 for trays laid out in the 31R orientation. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. West Coast Batteries ships nationwide — confirm your exact fitment with the battery finder at wcbatteries.com.