# Car battery Odyssey ODP-AGM31A 100Ah 925A AGM ![Car battery Odyssey ODP-AGM31A 100Ah 925A AGM](https://baterias.com/1387-home_default/battery-odyssey-odp-agm31a-100ah-925a.jpg) > Odyssey ODP-AGM31A car battery 100Ah 925A AGM. ODP range. Dimensions 330×173×239 mm, + terminal on the left. Check fitment by plate. **Category:** [Car batteries equipped with start stop system](https://baterias.com/gb/car-batteries-equipped-with-start-stop-system) → [ODYSSEY](https://baterias.com/gb/odyssey) - **Canonical URL**: https://baterias.com/gb/battery-odyssey-odp-agm31a-100ah-925a - **Language**: en-GB - **Brand**: ODYSSEY - **Reference**: BCOM-ODYSSEY-ODP-AGM31A - **MPN**: ODP-AGM31A - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | ODYSSEY | | Reference | ODP-AGM31 A | | Model | ODP | | Largo | 330 cm | | Ancho | 173 cm | | Alto | 239 cm | | Peso | 31.5 kg | | Tecnología | AGM | | Terminal layout | Positive terminal on the left | | Terminal type | SAE | | Cold cranking amps (EN) | 925 | | Capacity (C20) | 100 Ah (c20) | | Capacity (C10) | 92 Ah (c10) | ## Quick description **Odyssey ODP-AGM31A 100Ah 925A** is a passenger car battery with factory-guaranteed cranking power and extended service life. OEM quality at white-label prices: calcium-silver grids, low self-discharge and compatible with all modern electrical systems. ## Why this car battery? - **Original-equipment quality** without dealership prices - **Lasts 4 to 6 years** buy once instead of twice - **Real human tech support** if you have any doubts before buying ⚡ Capacity 100 Ah C20 🔋 Cold cranking 925 A SAE 📏 Dimensions 330×173×239 mm ⚙️ Technology AGM 🧭 Polarity Positive on the left ⚖️ Weight 31,5 kg 🏷️ Model ODP ## Description ## Start-Stop battery Odyssey ODP-AGM31A ODP 100Ah 925A 100*Ah* Capacity 925*A* Cold cranking 31.50*kg* Weight The **Odyssey ODP-AGM31A** with AGM technology delivers the **100 Ah** at **V** and **925 A** of cold cranking current (EN) that cars with Start-Stop, regenerative braking and heavy electrical loads need. Measuring 330 × 173 × 239 mm and the positive terminal on the left, it is the direct replacement for Start-Stop cars fitted from the factory with a 100 Ah battery of this format. - AGM: faster recharging and better cycle resistance than a conventional battery. - Fast recharge on the move thanks to low internal resistance. - Keeps comfort loads running with the engine off at the lights. - Direct replacement for the original Start-Stop battery. ### Will it fit your current battery tray? The Odyssey ODP-AGM31A is made in the 330 × 173 × 239 mm format and weighs 31.50 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses SAE terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### What the Odyssey ODP-AGM31A is for The Odyssey ODP-AGM31A is designed for cars with Start-Stop, regenerative braking and heavy electrical loads. If your car was fitted with an AGM or EFB battery, always replace it with the same technology: a conventional model would degrade within months. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 31.50 kg and SAE terminals. ### The Odyssey ODP-AGM31A: ODP range and AGM technology The ODP-AGM31A is part of the Odyssey **ODP** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### What Odyssey does differently Odyssey, part of the EnerSys group, makes thin-plate pure-lead (TPPL) batteries: extreme cranking, total vibration resistance and very long service life in motorsport, 4x4, marine and demanding vehicles. All the Odyssey batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Warranty and coverage The Odyssey ODP-AGM31A comes with the **manufacturer's official warranty**. To keep it valid, always fit the same technology as the original battery (AGM or EFB) and register the replacement if your vehicle requires it. ### Usage and maintenance tips Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Do not mix technologies: a conventional battery in a Start-Stop car degrades within months. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is the Odyssey ODP-AGM31A an AGM battery and what are the benefits of AGM? Yes. The ODP-AGM31A from Odyssey uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for cars with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### Is this battery compatible with Start-Stop systems? Yes. As AGM technology it is designed for Start-Stop vehicles. AGM batteries support advanced Start-Stop and regenerative braking thanks to their higher cycle count. EFB is recommended for basic Start-Stop; AGM is recommended when regenerative braking is also present, thanks to its higher cycle capability. It works straight out of the box — on most modern vehicles registering the battery via OBD is recommended so the alternator automatically applies the optimal charging profile. ### How do I change this battery step by step? In most cars it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — with positive on the left match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What is the service life of the ODP-AGM31A model? Expected lifespan of the Odyssey ODP-AGM31A is 5 to 8 years in mild-climate car use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What size is this battery? Dimensions (length × width × height) are 330×173×239 mm — also written as 330x173x239 mm — following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### On which side is the positive of the ODP-AGM31A model? Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk. ### Will the Odyssey ODP-AGM31A battery fit my car? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The ODP-AGM31A typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Odyssey ODP-AGM31A? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level. ### Why choose AGM instead of EFB for my Start-Stop car? AGM (Absorbent Glass Mat) technology uses absorbent fibreglass that retains the electrolyte, eliminating leaks and allowing up to 3× more charge/discharge cycles than a conventional battery. It is the recommended option when the car has advanced Start-Stop with regenerative braking (BMW EfficientDynamics, Mercedes Eco, Audi MHEV, Land Rover ECO, Volvo i-Stop). Withstands tilted positions, high vibration and extreme temperatures better than EFB. The Odyssey ODP-AGM31A is fully original and meets European EN 50342-6 standards for advanced Start-Stop. ### Do I need to register the Odyssey ODP-AGM31A on the car after installation? On most cars it is not strictly necessary — the alternator detects the new battery and adapts the charge automatically. It is recommended to register the battery via OBD so that the alternator applies the optimal charging profile from the first minute and extends the battery life as much as possible (especially on brands with sophisticated BMS: BMW, Mercedes, Audi, Volvo, Land Rover). Any workshop with an OBD scanner (~10-15 € labour) does it in 5 minutes. DIY apps: VCDS / Carista (VAG), Bimmercode (BMW), iCarsoft. If you do not register, the car will still start correctly — the alternator just takes a few days to adjust the profile. The Odyssey ODP-AGM31A ships factory-charged at 80-90% so you can use it straight after fitting. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-27*