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  • Vendor:

    Odyssey

ODX-AGM78

$416.99
$416.99
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ODYSSEY Extreme Battery

ODX-AGM78

(78-PC1500)
(Group 78 with 3/8 inch threaded side receptacles)

The ODYSSEY Extreme ODX-AGM78 is a BCI Group 78 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 78 battery around 850 CCA and 68 Ah (20-hour) with 135 minutes of reserve capacity, the ODX-AGM78 is the current version of the legacy 78-PC1500 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-AGM78 is built for exactly that duty: the highest cranking output in the WCB Group 78 lineup, deep-discharge recovery, extreme vibration resistance, fast recharge, and up to 400 cycles at 80% depth of discharge per EnerSys published ratings.

Group 78 is a side-terminal group; the ODX-AGM78 uses threaded side receptacles. 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, the ODP-AGM78 covers the same Group 78 footprint. The ODX-AGM78 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

Length10.9 in
Width6.8 in
Height (terminals incl.)7.3 in
Height (container)7.3 in
Weight49.5 lbs

General

Battery TechnologyTPPL AGM
BCI Group Size78
Warranty4 years

Electrical

Voltage12 V
Cold Cranking Amps (CCA)850 A
Pulse HCA 5sec (PHCA)1500 A
Nominal Capacity (20Hr)68 Ah
Reserve Capacity135 min
Terminal TypeSIDE
Operating Temperature-40°F to 176°F
Cycle Life at 80% DoD400 cycles
Also known as: 78-PC1500

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✓ Best for

Working vehicles that take a BCI Group 78 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-AGM78 is the current version of the legacy 78-PC1500 part number.
Cross-reference Group 76 or 77 applications are ODX-only — the ODX-AGM78 is the battery for that cross-reference; the ODP-AGM78 and standard AGM do not meet its performance requirement.

✕ Not for

Not for powersport applications — the ODX-AGM78 is an automotive and commercial battery.
Daily drivers with stock electrical loads are covered by the ODP-AGM78 in the same Group 78 footprint — the ODX-AGM78 is built for continuous-draw duty.

→ Intended for

Fleet manager, upfitter, or owner of a working vehicle in BCI Group 78 whose duty cycle keeps drawing after shutdown, for whom a no-start is an operational failure, not an inconvenience.

Many Chevrolet Silverado 1500 HD models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many GMC Sierra 1500 HD models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many GMC Yukon models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many Chevrolet C/K Suburban models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many Chevrolet Express 2500 or 3500 work van models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many GMC Savana 2500 or 3500 work van models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many AM General Hummer models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many Chevrolet Silverado 3500 models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many Workhorse P42 step van models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
Many Workhorse W-series Class A motorhome chassis (W22/W24/W42/W62) models use a BCI Group 78 battery, though the exact group depends on the year, engine, and trim — confirm the exact fit for your specific year, engine, and trim with WCB's battery finder at wcbatteries.com. If the application carries loads that keep drawing after the ignition is off — telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the deeper-reserve option for the Group 78 footprint is the Odyssey Extreme ODX-AGM78, a TPPL (Thin Plate Pure Lead) AGM rated 850 CCA, 68 Ah (20-hour), and 135 minutes of reserve capacity, with side terminals and a rated operating range of -40°F to 176°F. Its absorbed-electrolyte construction delivers 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.
For a Group 78 application with high parasitic draw — loads that keep drawing after the ignition is off such as telematics, two-way radios, liftgates, refrigerators, security cameras, winches, auxiliary lighting, inverters, or 12V accessories — the Odyssey Extreme ODX-AGM78 is the deeper-reserve choice: 850 CCA, 68 Ah (20-hour), 135 minutes of reserve capacity, side 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.