# Caravan battery Optima YTR-5.0 12V 66Ah AGM ![Caravan battery Optima YTR-5.0 12V 66Ah AGM](https://baterias.com/4348-home_default/battery-optima-yt-r-50-12v-66ah-845a-845a.jpg) > Optima YTR-5.0 caravan battery 12V 66Ah AGM. For auxiliary services (fridge, lights, water) in motorhome or caravan. 24 h delivery. **Category:** [Batteries for Caravans](https://baterias.com/gb/batteries-for-caravans) → [OPTIMA](https://baterias.com/gb/optima) - **Canonical URL**: https://baterias.com/gb/battery-optima-yt-r-50-12v-66ah-845a-845a - **Language**: en-GB - **Brand**: OPTIMA - **Reference**: BCOM-OPTIMA-YTR-5.0 - **EAN**: 4016987141038 - **MPN**: YTR-5.0 - **Price**: 261,06 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | OPTIMA | | Reference | YTR-5 | | Model | OPTIMA YELLOW TOP | | Voltaje | 12 V | | Capacidad (Ah) | 66 Ah (c20) | | Largo | 309 mm | | Ancho | 172 mm | | Alto | 219 mm | | Peso | 20.6 kg | | Tecnología | AGM ESPIRAL | | Arranque en frío (CCA) | 845 A | | Scheme | 0 | | Terminal | 1 | | Subjection | B1 | | Arranque en frío CCA EN | 845 A | | Capacidad C20 (Ah) | 66 Ah | ## Quick description **Optima YTR-5.0 12V 66Ah 845A** is a leisure battery for campers, motorhomes and caravans. Designed to power the entire interior kit (fridge, heater, water pump, USB, LED lighting) for several days off-grid, with no need to plug into a campsite hookup. ### Why this caravan battery? - **Real off-grid autonomy** no campsite hookup needed - **Lasts the whole season** handles daily discharges without capacity loss - **Powers it all at once** fridge, water pump, LED and USB without issues 🔌 Voltage 12 V ⚡ Capacity 66 Ah C20 🔋 Cold cranking 845 A EN-1 📏 Dimensions 309×172×219 mm ⚙️ Technology AGM 🧭 Polarity Positive on the right ⚖️ Weight 20,6 kg 🏷️ Model Optima Yellow Top ## Description ## Battery Optima Yellow Top YTR-5.0 66Ah 845A 12V The Battery OPTIMA YTR-5.0 66Ah 845A 12V YELLOW TOP belongs to the Optima Yellowtop battery range This high -end battery incorporates Spiracell (cells with spiral structure inside that enhances the performance of the batteries) created by Optima, designed for demanding deep cycle uses. They are vibrations resistant batteries that exceed up to three times the useful life of conventional batteries and guarantee an uninterrupted supply of energy throughout the entire discharge cycle.Capable of fully loading after repeated intense energy demands, so it can feed numerous electronic devices and continue starting the vehicle again and again. They reach higher voltage levels so their energy is cleaner.And its compact design facilitates its assembly in small spaces while minimizing its weight.That is why they are ideal batteries for current vehicles full of accessories, such as motorhomes, for 4x4 and for commercial cleaning applications. ### Ideal for: - Start applications - Deep cycle applications ### Battery advantages and characteristics OPTIMA YTR-5.0 66Ah 845A 12V - Long useful life.Lasts up to three times more than conventional flat plates batteries - Constant performance - Greater power - Perfect for seasonal uses.If it is fully charged, it may not be used for a period of up to 12 months at room temperature (or lower) and yet start a car. - x15 times more resistant to vibrations than standard lead-acid batteries - Free of mantenimient - It can be installed almost in any position ### How to find the right battery for your vehicle or device? Optimal AGM AGM batteries are not comparable to any other battery in the world.Its Spi-Dpiell technology is among the most advanced lead-acid battery technologies available in the market. If you are not sure what cover color is better under your hood, do not hesitate to contact us and we will be happy to advise you. ### Why choose an optimal battery? If you look for the maximum possible power or a battery to work in the toughest working conditions.Do not hesitate, choose an optima battery ### OPTIMA - LEADING BRAND IN THE SECTOR With a 40 -year history of technological innovation and engineering, Optima® products offer unstoppable power for extreme enthusiasts and other people who require the final source of energy. In the 1970s, Optima Batteries presented the first main maintenanceless lead batteries for commercial and military use and the first high-performance AGM automotive batteries, but optimal innovation did not stop there.Optima the industry revolutionized with the introduction of its exclusive Spiord Technology® that grants certain key benefits such as: - Incredibly high starter characteristics in a small battery - Up to 15 times more resistance to vibrations than a conventional battery - Have a higher life cycle compared to traditional batteries If you want additional information about Battery Optima Yellow Top YTR-5.0, you can download the product's technical sheet at the following link: [ Download technical sheet Optima Yellow Top YTR-5.0 66Ah 845A 12V](/fichastecnicas/data-sheet-battery-optima-ytr-5_0-66ah-845a-12v-en.pdf) ## Frequently asked questions ### Is the Optima YTR-5.0 an AGM battery and what are the benefits of AGM? Yes. The YTR-5.0 from Optima 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 caravans with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### How do I know if the YTR-5.0 model fits my caravan? 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 YTR-5.0; 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 YTR-5.0 model in my caravan? In most caravans 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 caravans with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What is the warranty period of this battery? The official manufacturer warranty is 2 years and covers manufacturing defects. It covers cell failures, internal short-circuits and abnormal capacity drops. It does NOT cover misuse (prolonged overcharging, inadequate charger, defective alternator). Once the defect is verified by technical inspection, we replace the YTR-5.0 at no cost. ### What is the delivery time for this battery? 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. ### How do I return the YTR-5.0 model if it doesn't fit? 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 the YTR-5.0 model? The current price at baterias.com is 261,06 € (VAT included; 215,75 € 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 can I buy the Optima YTR-5.0 battery? 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 long does the Optima YTR-5.0 battery last? Expected lifespan of the Optima YTR-5.0 is 5 to 8 years in mild-climate caravan 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 Optima YTR-5.0 battery? Dimensions (length × width × height) are 309×172×219 mm — also written as 309x172x219 mm — following the European DIN standard. Always measure the space in your caravan before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### How much does the Optima YTR-5.0 battery weigh? It weighs 20,6 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 amps does the Optima YTR-5.0 battery have? Nominal capacity 66 Ah[?cca: and [cold-cranking amps 845 A]] at 12 V. 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. ### Will the Optima YTR-5.0 battery fit my caravan? 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 YTR-5.0 fits 4 verified vehicle versions in our database. ### Which batteries are equivalent to the Optima YTR-5.0? 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 caravans. See the "Equivalents" section to view recommended options at the same performance level. ### Which is better: Optima YTR-5.0 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 real-world experiences are there with this battery? The average rating of the Optima YTR-5.0 on baterias.com is 4.85/5 from 24 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 (4.4/5 from 10,548+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped caravans that need OBD registration after fitting. ## Compatible vehicles This battery fits 4 vehicles. Most searched: - [TOYOTA TUNDRA Pickup (\_K5\_, \_K6\_) (2006)](https://baterias.com/gb/car-batteries/toyota/tundra-pickup-_k5_-_k6) - [TOYOTA SEQUOIA (\_K6\_) (2007)](https://baterias.com/gb/car-batteries/toyota/sequoia-_k6) - [TOYOTA TUNDRA Pickup (\_K3\_, \_K4\_) (1999)](https://baterias.com/gb/car-batteries/toyota/tundra-pickup-_k3_-_k4) ## Reviews - **Average rating**: 4.85 / 5 (24 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 · 2026-07-13*