# Car battery Odyssey ODX-AGM34R 68Ah 850A AGM

![Car battery Odyssey ODX-AGM34R 68Ah 850A AGM](https://baterias.com/1415-home_default/battery-odyssey-odx-agm34r-68ah-850a.jpg)

> Odyssey ODX-AGM34R car battery 68Ah 850A AGM. ODX range. Dimensions 277×173×201 mm, + terminal on the right. 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-agm34r-68ah-850a
- **Language**: en-GB
- **Brand**: ODYSSEY
- **Reference**: BCOM-ODYSSEY-ODX-AGM34R
- **EAN**: 0635241140415
- **MPN**: ODX-AGM34R
- **Price**: 471,50 € (VAT incl., Spain)
- **Last updated**: 2026-10-28
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | ODYSSEY |
| Reference | ODX-AGM34 R |
| Model | ODX |
| Largo | 277 cm |
| Ancho | 173 cm |
| Alto | 201 cm |
| Peso | 22.5 kg |
| Tecnología | AGM |
| Terminal layout | Positive terminal on the right |
| Terminal type | SAE |
| Cold cranking amps (EN) | 850 |
| Capacity (C20) | 68 Ah (c20) |
| Capacity (C10) | 62 Ah (c10) |

## Quick description

**Odyssey ODX-AGM34R 68Ah 850A** 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
68 Ah C20

🔋 Cold cranking
850 A SAE

📏 Dimensions
277×173×201 mm

⚙️ Technology
AGM

🧭 Polarity
Positive on the right

⚖️ Weight
22,5 kg

🏷️ Model
ODX

## Description

## Car battery Odyssey ODX-AGM34R ODX 68Ah 850A

68*Ah* Capacity
850*A* Cold cranking
22.50*kg* Weight

With **68 Ah** at **V** and **850 A** of cold cranking current (EN), the **Odyssey ODX-AGM34R** from the **ODX** range is a starter battery built for passenger cars with conventional starting, without a Start-Stop system. It measures 277 × 173 × 201 mm and the positive terminal on the right, the format sought by anyone replacing a 68 Ah battery in cars.
- Reliable cold starts, even after weeks without driving.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Original-equipment build quality without the dealership price.
- Direct replacement for the original battery in size and terminals.

### What the Odyssey ODX-AGM34R is for

The Odyssey ODX-AGM34R covers the needs of passenger cars with conventional starting, without a Start-Stop system: reliable starting, stable voltage for the electronics and a service life of several years in daily use. Check that it matches your current battery in size and terminal position. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 22.50 kg and SAE terminals.

### Dimensions, polarity and mounting

In terms of format, the Odyssey ODX-AGM34R measures 277 × 173 × 201 mm (length × width × height) and weighs 22.50 kg. The positive terminal on the right 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.

### The Odyssey ODX-AGM34R: ODX range and AGM technology

The **ODX** is the Odyssey range the ODX-AGM34R 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.
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 batteries combine starting and deep cycling in a single sealed pure-lead unit, with some of the longest warranties on the market. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### Official warranty

The Odyssey ODX-AGM34R 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.

### Usage and maintenance tips

Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators.

### Shipping, delivery 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 ODX-AGM34R an AGM battery and what are the benefits of AGM?

Yes. The ODX-AGM34R 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 the ODX-AGM34R model suitable for Start-Stop cars?

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-AGM34R 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 right match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−).

### How long does the Odyssey ODX-AGM34R battery last?

Expected lifespan of the Odyssey ODX-AGM34R 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 dimensions of the Odyssey ODX-AGM34R battery?

Dimensions (length × width × height) are 277×173×201 mm — also written as 277x173x201 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-AGM34R battery have?

Polarity: positive on the right. 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.

### Is the ODX-AGM34R valid for my vehicle?

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-AGM34R typically fits a wide range of European vehicles thanks to its standard DIN case format.

### What are the equivalents of the ODX-AGM34R model?

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-AGM34R 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-AGM34R is fully original and meets European EN 50342-6 standards for advanced Start-Stop.

### Do I need to register the Odyssey ODX-AGM34R 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 ODX-AGM34R 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 · 2026-10-31*