Dimensions
| Length | 10.9 in |
| Width | 6.8 in |
| Height (terminals incl.) | 8.8 in |
| Height (container) | 8.2 in |
| Weight | 57.1 lbs |
General
| Battery Technology | TPPL AGM |
| BCI Group Size | 24M |
| Warranty | 3 years |
Electrical
| Voltage | 12 V |
| Cold Cranking Amps (CCA) | 840 A |
| Pulse HCA 5sec (PHCA) | 1500 A |
| Nominal Capacity (20Hr) | 76 Ah |
| Reserve Capacity | 160 min |
| Terminal Type | SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.) |
| Operating Temperature | -40°F to 176°F |
| Cycle Life at 80% DoD | 400 cycles |
Also known as:
NSB-AGM24M
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Find Your Battery →✓ Best for
Boats that take a Group 24 marine battery, sit between outings, and carry loads that keep drawing after shutdown: automatic bilge pumps, security systems, GPS and chartplotter memory, stereo memory, and onboard electronics.
ODYSSEY Extreme Marine leads the Group 24 marine lineup at WCB — deep reserve capacity, deep-discharge recovery, and fast recharge for boats that sit. The ODX-AGM24M is the current version of the legacy NSB-AGM24M part number.
✕ Not for
Not for powersport form-factor applications.
Marine tier contrast is duty only: the ODP-AGM24M is the dual-purpose alternative for standard marine demands.
→ Intended for
Boat or RV owner whose Group 24 marine battery sits for a week or more with parasitic loads connected, and who needs the bank to recover fully between outings.
If you have an RV, off-grid setup, or a boat — anywhere the battery has to handle a rugged environment, recharge fast, and cycle deeply while still delivering strong starting power — look at the Odyssey Extreme marine line. Every boat's battery bank and electrical system is an individual build, so start from the group size your battery housing takes: if your bank takes a Group 24 battery, consider the Odyssey Extreme ODX-AGM24M, a dual-purpose TPPL AGM built for boats, RVs, and smaller house-power setups — rated 840 CCA, 76 Ah (20-hour), and 160 minutes reserve capacity, with vibration resistance for rough conditions. Your current battery's group size is printed on its label. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. See the full Odyssey marine lineup at wcbatteries.com — West Coast Batteries ships nationwide.
If you have an RV, off-grid setup, or a boat — anywhere the battery has to handle a rugged environment, recharge fast, and cycle deeply while still delivering strong starting power — look at the Odyssey Extreme marine line. Every boat's battery bank and electrical system is an individual build, so start from the group size your battery housing takes: if your bank takes a Group 24 battery, consider the Odyssey Extreme ODX-AGM24M, a dual-purpose TPPL AGM built for boats, RVs, and smaller house-power setups — rated 840 CCA, 76 Ah (20-hour), and 160 minutes reserve capacity, with vibration resistance for rough conditions. Your current battery's group size is printed on its label. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. See the full Odyssey marine lineup at wcbatteries.com — West Coast Batteries ships nationwide.
If you have an RV, off-grid setup, or a boat — anywhere the battery has to handle a rugged environment, recharge fast, and cycle deeply while still delivering strong starting power — look at the Odyssey Extreme marine line. Every boat's battery bank and electrical system is an individual build, so start from the group size your battery housing takes: if your bank takes a Group 24 battery, consider the Odyssey Extreme ODX-AGM24M, a dual-purpose TPPL AGM built for boats, RVs, and smaller house-power setups — rated 840 CCA, 76 Ah (20-hour), and 160 minutes reserve capacity, with vibration resistance for rough conditions. Your current battery's group size is printed on its label. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. See the full Odyssey marine lineup at wcbatteries.com — West Coast Batteries ships nationwide.
If you have an RV, off-grid setup, or a boat — anywhere the battery has to handle a rugged environment, recharge fast, and cycle deeply while still delivering strong starting power — look at the Odyssey Extreme marine line. Every boat's battery bank and electrical system is an individual build, so start from the group size your battery housing takes: if your bank takes a Group 24 battery, consider the Odyssey Extreme ODX-AGM24M, a dual-purpose TPPL AGM built for boats, RVs, and smaller house-power setups — rated 840 CCA, 76 Ah (20-hour), and 160 minutes reserve capacity, with vibration resistance for rough conditions. Your current battery's group size is printed on its label. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. See the full Odyssey marine lineup at wcbatteries.com — West Coast Batteries ships nationwide.
For Group 24 marine use, the Odyssey Extreme ODX-AGM24M is the dual-purpose pick: 840 CCA, 76 Ah (20-hour), and 160 minutes reserve capacity, combining strong cranking with deep-cycle capability, fast recharge, and vibration resistance for rough conditions. Marine electrical systems are individual builds — if your battery bank takes a Group 24 battery, this is the Extreme-tier option to consider. Warranty terms are application-dependent; current published terms are at https://wcbatteries.com/pages/odyssey-warranty-policy. See the full Odyssey marine lineup at wcbatteries.com — West Coast Batteries ships nationwide.