Odyssey ODX-AGM31MJ 12V 100Ah Extreme Battery, 2 Years Warranty

High-demand applications – from heavy commercial vehicles to marine installations – require a battery capable of sustained delivery under extreme load cycles. The Odyssey ODX-AGM31MJ is a 12V 100Ah Extreme Battery engineered to meet those demands, combining exceptional cold-start authority with deep-cycle resilience in a single unit.

Built on Odyssey's AGM2 Thin Plate Pure Lead (TPPL) technology, the ODX-AGM31MJ uses pure lead plates manufactured to exceptionally fine tolerances, allowing a greater number of plates per cell than conventional AGM designs. The result is a higher active surface area, which translates directly into more cranking power, faster recharge acceptance, and an extended service life. The sealed AGM construction eliminates acid stratification and eliminates the need for maintenance topping-up." The ODX-AGM31MJ delivers 1150 CCA (EN) and a 100Ah rated capacity (C20). Physical dimensions are 332mm × 176mm – 242mm (L × W × H) with a weight of 29kg. Terminal configuration and polarity must be verified against the product label prior to fitment. This unit crosses to the Odyssey 31-PC2150MJS reference and supports start-stop systems where confirmed on the product label. "The ODX-AGM31MJ is one of several case sizes within the Odyssey Extreme range. Alternative fitments include ODX-AGM34, ODX-AGM34R, ODX-AGM34-78, ODX-AGM78, ODX-AGM65, ODX-AGM24, ODX-AGM27, ODX-AGM31, ODX-AGM31A, and ODX-AGM31R, accommodating a broad range of group sizes and terminal arrangements." This battery is supplied with a 2-year warranty covering defects in materials and workmanship under normal operating conditions. "Standard delivery: 1–3 working days within UK mainland. 30-day returns.

Welcome to AGM2 TPPL - A new generation of battery for modern power demands. ODYSSEY® AGM2 Thin Plate Pure Lead (TPPL) batteries feature pure lead plates that are extremely thin, so more of them fit into the battery. More plates mean more power – ODYSSEY AGM2 TPPL batteries deliver twice the power and three times the service life of any other conventional battery, outperforming standard AGM or SLI (flooded) batteries in terms of power density, fast-charge acceptance, shelf life, durability and most important – value for your money. Twice the power and three times the life of any other conventional battery. AGM2 INSIDE Super High-Grade Materials + Refined Electro-Chemistry + TPPL = 2X the power and 3X the life. MASSIVE STARTING POWER Engine cranking pulses up to 2700 amps for 5 seconds. EXTENDED CYCLE LIFE Up to 900 charge-discharge cycles at 50% DOD. VIBRATION RESISTANT Protection from high impact shocks and vibration. WIDE TEMPERATURE TOLERANCE -40°C to +80°C. ONGER LIFE 8- to 12-year design life and 3- to 10-year service life compared to conventional lead acid batteries. VIRTUALLY MAINTENANCE-FREE Sealed ODYSSEY AGM2 TPPL batteries never need water.

• Backed by a 2 Years Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
• Engineered to deliver consistent starting power and steady performance in demanding automotive applications.
• Engineered as a No 12.0 battery, ensuring consistent current flow, strong cranking power, and stable voltage delivery.
• Manufactured by Odyssey, a trusted brand delivering reliable automotive power and longevity .
• Weighs 29.0 kg (63.9 lb), balancing high capacity with manageable handling for easy fitting and routine maintenance.
• OEM-style design ensures perfect terminal alignment, secure fitment, and support for both standard and start-stop vehicle systems.

Engineered for leisure and recreational vehicles, offering deep-cycle discharge capability and sustained energy delivery for extended off-grid power during camping or seasonal travel use.

• Restores dependable starting for vehicles that require consistent, everyday performance in regular driving conditions.
• Suited to No battery applications, delivering steady operation for vehicles with start-stop or accessory-heavy systems.
• Supports stable electrical output for ignition, lighting, infotainment, and critical onboard electronics in all environments.
• Performs reliably across short commutes and longer journeys where consistent restarts and electrical stability are essential.

PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specialising in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalogue of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.

You must check your current battery against the specifications of this battery before ordering to ensure that this is the correct battery for your vehicle. Check battery technology, dimensions, terminal type, polarity, capacity (AH) and cranking performance (CCA). We cannot guarantee correct fitment under any circumstances.