# Car battery Odyssey ODX-AGM31A 100Ah 1150A AGM

![Car battery Odyssey ODX-AGM31A 100Ah 1150A AGM](https://baterias.com/1417-home_default/battery-odyssey-odx-agm31a-100ah-1150a.jpg)

> Odyssey ODX-AGM31A car battery 100Ah 1150A AGM. ODX range. Dimensions 330×173×246 mm, + terminal on the left. Check fitment by plate.

**Category:** [Car Batteries](https://baterias.com/gb/car-batteries) → [ODYSSEY](https://baterias.com/gb/odyssey)

- **Canonical URL**: https://baterias.com/gb/battery-odyssey-odx-agm31a-100ah-1150a
- **Language**: en-GB
- **Brand**: ODYSSEY
- **Reference**: BCOM-ODYSSEY-ODX-AGM31A
- **MPN**: ODX-AGM31A
- **Price**: 552,40 €
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | ODYSSEY |
| Reference | ODX-AGM31 A |
| Model | ODX |
| Largo | 330 cm |
| Ancho | 173 cm |
| Alto | 246 cm |
| Peso | 35.3 kg |
| Tecnología | AGM |
| Terminal layout | Positive terminal on the left |
| Terminal type | SAE |
| Cold cranking amps (EN) | 1150 |
| Capacity (C20) | 100 Ah (c20) |
| Capacity (C10) | 92 Ah (c10) |

## Quick description

**Odyssey ODX-AGM31A 100Ah 1150A** is a ready-to-use passenger car battery, sealed and maintenance-free. Delivers the cranking amps the engine needs in cold weather and keeps stable voltage for modern car loads (ECU, sensors, climate control, infotainment).

## 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
1150 A SAE

📏 Dimensions
330×173×246 mm

⚙️ Technology
AGM

🧭 Polarity
Positive on the left

⚖️ Weight
35,3 kg

🏷️ Model
ODX

## Description

## Car battery Odyssey ODX-AGM31A ODX 100Ah 1,150A

100*Ah* Capacity
1,150*A* Cold cranking
35.30*kg* Weight

The **Odyssey ODX-AGM31A** from the **ODX** range delivers **100 Ah** and **1,150 A** of cold cranking current (EN) at **V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. Its 330 × 173 × 246 mm and the positive terminal on the left make it the exact replacement for the 100 Ah battery fitted as standard to many cars.
- Designed to last several years under normal daily use.
- Low self-discharge: copes with long stops without losing charge.
- Stable voltage for the vehicle electronics (ECU, sensors, climate control).
- AGM: faster recharging and better cycle resistance than a conventional battery.

### Size, terminals and hold-down of the Odyssey ODX-AGM31A

The Odyssey ODX-AGM31A is made in the 330 × 173 × 246 mm format and weighs 35.30 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. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.

### What the Odyssey ODX-AGM31A is for

Designed for passenger cars with conventional starting, without a Start-Stop system, the Odyssey ODX-AGM31A is the direct replacement when your vehicle uses a 100 Ah battery of this format. Before buying, compare dimensions, terminals and capacity with the battery you are replacing. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 35.30 kg and SAE terminals.

### The Odyssey ODX-AGM31A: ODX range and AGM technology

The **ODX** is the Odyssey range the ODX-AGM31A belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.

### Odyssey: the maker behind the ODX-AGM31A

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.

### Manufacturer's warranty

The Odyssey ODX-AGM31A comes with the **manufacturer's official warranty** against manufacturing defects; the exact period is stated in the brand's conditions. If it fails through a defect within the period, we replace it free of charge.

### Care and maintenance

Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge. In normal daily use the alternator keeps the battery charged; if the car stands for weeks, a maintenance charge once a month prevents deep discharge.

### When you get it and how to return it

Orders placed **before 6:00 pm** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **14 days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

## Frequently asked questions

### Is the ODX-AGM31A model AGM? What does this technology offer?

Yes. The ODX-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 is the Odyssey ODX-AGM31A battery installed in the vehicle?

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 ODX-AGM31A model?

Expected lifespan of the Odyssey ODX-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 are the measurements of the ODX-AGM31A model?

Dimensions (length × width × height) are 330×173×246 mm — also written as 330x173x246 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.

### What polarity does the Odyssey ODX-AGM31A battery have?

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 ODX-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 ODX-AGM31A typically fits a wide range of European vehicles thanks to its standard DIN case format.

### Which batteries are equivalent to the Odyssey ODX-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.

### What advantages does the Odyssey ODX-AGM31A AGM battery offer over an EFB?

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 ODX-AGM31A is fully original and meets European EN 50342-6 standards for advanced Start-Stop.

### Is there anything to do after replacing a Start-Stop battery?

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 ODX-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

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*baterias.com — Automotive batteries · 2026-10-25*