# Car battery Odyssey ODX-AGM34-78 68Ah 850A AGM ![Car battery Odyssey ODX-AGM34-78 68Ah 850A AGM](https://baterias.com/1413-home_default/battery-odyssey-odx-agm34-78-68ah-850a.jpg) > Odyssey ODX-AGM34-78 car battery 68Ah 850A AGM. ODX range. Dimensions 277×173×201 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-agm34-78-68ah-850a - **Language**: en-GB - **Brand**: ODYSSEY - **Reference**: BCOM-ODYSSEY-ODX-AGM34-78 - **MPN**: ODX-AGM34-78 - **Price**: 455,80 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | ODYSSEY | | Reference | ODX-AGM34-78 | | Model | ODX | | Largo | 277 cm | | Ancho | 173 cm | | Alto | 201 cm | | Peso | 22.5 kg | | Tecnología | AGM | | Scheme | Positive terminal on the left | | Terminal | SAE | | Arranque en frío CCA EN | 850 A | | Capacidad C20 (Ah) | 68 Ah (c20) | | Capacidad C10 (Ah) | 62 Ah (c10) | ## Quick description **Odyssey ODX-AGM34-78 68Ah 850A** 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 68 Ah C20 🔋 Cold cranking 850 A SAE 📏 Dimensions 277×173×201 mm ⚙️ Technology AGM 🧭 Polarity Positivo a la izquierda ⚖️ Weight 22,5 kg 🏷️ Model ODX ## Description ## Battery Odyssey 34/78-PC1500 ODX-AGM34-78 68Ah 850A The battery ODYSSEY ODX-AGM34-78 34/78-PC1500 68Ah 850A (sae) ODX belongs to the Odyssey Odx batteries range, Odyssey batteries offer enormous starting power, rapid recovery and extreme durability required by heavy and commercial vehicles. Some batteries offer great boot power.Other batteries offer reserve energy for deep cycles.Odyssey batteries do both.Today's commercial vehicles have to feed a variety of accessories, both inside the cabin and outside it.Whether on the road, on the farm or in the workplace, the Odyssey batteries have the power to start any task and the durability to last until it is over. Like many other spiral batteries, Odyssey Extreme Series batteries use sealed and dry cell technology with absorbent fiberglass (AGM), which allows you to install the battery even on one side. ### Ideal for: - Commercial Vehicles - Vehicles with great energy demands ### Battery advantages and characteristics ODYSSEY ODX-AGM34-78 34/78-PC1500 68Ah 850A (sae) - Great starting power.Starting impulses of up to 2700 amps for five seconds - Tolerance at extreme temperatures - Greater shelf life - Vibrations resistant ### How to find the right battery for your vehicle or device? If you have doubts about the battery you need, do not hesitate to contact our customer service. ### Why choose an Odyssey battery? The Odyssey brand batteries are resistant to vibrations because they have extreme protection against impacts and vibrations.All this to meet the needs of vehicles, vessels and modern equipment. ### Know more about Odyssey Odyssey, with +25 years in the sector (also developed by Enersys) offers batteries designed with PURE Power TPPL technology, with twice as much power and triple useful life than other conventional batteries. The Odyssey brand batteries have a massive starting power (start -up impulses of up to 2700 amps for five seconds).They are resistant to vibrations because they have extreme protection against impacts and vibrations. All this to meet the needs of modern vehicles, vessels and equipment, since its ODP (performance) and ODX (Extreme) series offer mixed use batteries that are worth almost for any application. If you want additional information about Battery Odyssey 34/78-PC1500 ODX-AGM34-78, you can download the product's technical sheet at the following link: [ Download technical sheet Odyssey 34/78-PC1500 ODX-AGM34-78 68Ah 850A](/fichastecnicas/data-sheet-battery-odyssey-odx-agm34-78-68ah-850a-en.pdf) ## Frequently asked questions ### Is the ODX-AGM34-78 model AGM? What does this technology offer? Yes. The ODX-AGM34-78 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 Odyssey ODX-AGM34-78 battery suitable for Start-Stop? 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 know if the ODX-AGM34-78 model fits my car? Three ways: 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 for the ODX-AGM34-78; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 9:00–18:00 CET). ### How do I fit the ODX-AGM34-78 model in my car? 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 this page. 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 — 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 warranty does the Odyssey ODX-AGM34-78 battery have? The official manufacturer warranty is 2 years and covers manufacturing defects. Coverage includes cell breakdowns, internal short-circuits and abnormal capacity decreases. It does NOT cover misuse (prolonged overcharging, inadequate charger, defective alternator). On confirmed defect after technical inspection, we replace the ODX-AGM34-78 model at no cost. ### How long does Odyssey ODX-AGM34-78 delivery take? In mainland Spain and Portugal it arrives in 24 h if you order before 17:00 and the battery is in stock — it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships. ### Are returns accepted on this battery? Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE — we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period. ### What is the price of this battery? The current price at baterias.com is 455,80 € (VAT included; 376,69 € excl. VAT), updated every 24 hours. The applicable VAT may vary with the destination country and is confirmed in the cart. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). ### Where do I find the ODX-AGM34-78 model online? At baterias.com — authorised distributor with real stock, 24h delivery in mainland Spain and Portugal if you order before 17:00, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point. ### How many years does this battery last? Expected lifespan of the Odyssey ODX-AGM34-78 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-AGM34-78 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 is the weight of the ODX-AGM34-78 model? It weighs 22,5 kg. Most of the weight is lead. If you plan to fit it yourself, use gloves and a carrying strap (AGM batteries are slightly heavier than conventional due to the absorbent glass-mat fibre). ### How many Ah and CCA does this battery have? Nominal capacity 68 Ah[?cca: and [cold-cranking amps 850 A]]. Ah measure the total energy available (autonomy); CCA (also written A in cold or EN under the European standard) measure the instantaneous power to crank the starter motor. A battery with more CCA starts better in winter; one with more Ah keeps accessories on for longer. ### Is the ODX-AGM34-78 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 9:00–18:00 CET). The ODX-AGM34-78 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which interchangeable batteries are there for this one? 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. ### Which is better: Odyssey ODX-AGM34-78 or an alternative from another brand? This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section. ### What reviews does the ODX-AGM34-78 model have? The average rating of the Odyssey ODX-AGM34-78 on baterias.com is 4.79/5 from 26 verified customer reviews. The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.5/5 from 11,578+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped cars that need OBD registration after fitting. ### When do I need an AGM battery like this one? 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-AGM34-78 is fully original and meets European EN 50342-6 standards for advanced Start-Stop. ### Do I need to register the Odyssey ODX-AGM34-78 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-AGM34-78 ships factory-charged at 80-90% so you can use it straight after fitting. ## Reviews - **Average rating**: 4.79 / 5 (26 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-13*