Optima YTR-5.0 · Caravan battery 12V 66Ah 845A AGM
Specifications
| Brand | OPTIMA |
|---|---|
| Part number | YTR-5.0 |
| Voltage (V) | 12 |
| Capacity | 66Ah (c20) |
| Capacity (C20) | 66 |
| Technology | AGM ESPIRAL |
| Length | 309.00 mm |
| Width | 172.00 mm |
| Height | 219.00 mm |
€261.70
VAT included
4,82/5★★★★★31 reviewsVerified purchases
- ★★★★Samuel Reyes:
No tenía ni idea de cómo instalar una batería y me ayudaron. Al final fue fácil
- ★★★★★Domingo Gomez:
Usualmente no recibes un trato tan personalizado, pero en esta web me ayudaron con la elección y la instalación de la batería.
- ★★★★★Diego Crespo:
Pedí la batería un miércoles a las 4 y me llegó el jueves a las 2
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 autonomyno campsite hookup needed
- Lasts the whole seasonhandles daily discharges without capacity loss
- Powers it all at oncefridge, water pump, LED and USB without issues
Voltage
12 V
Capacity
66 Ah
Cold cranking
845 A
Dimensions
309×172×219 mm
Technology
AGM ESPIRAL
Polarity
Positive on the right
Weight
20,6 kg
Model
OPTIMA YELLOW TOP
Leisure battery Optima YTR-5.0 Yellow Top 66Ah 845A 12V
12VVoltage
66AhCapacity
845ACold cranking
20.60kgWeight
The 12 V, 66 Ah Optima YTR-5.0 battery from the Yellow Top range with spiral-cell AGM technology is designed for motorhomes, caravans and campers that need power off-grid. It replaces the original battery without adaptation in motorhomes and caravans with a 309 × 172 × 219 mm format: same 66 Ah capacity and the positive terminal on the right.
- Sealed and gas-free: suitable for installation inside the living area.
- Low self-discharge during months of storage.
- Spiral cells: maximum vibration resistance and very powerful cranking.
- Power for fridge, lighting, water pump and USB off-grid.
Size, terminals and hold-down of the Optima YTR-5.0
The Optima YTR-5.0 is made in the 309 × 172 × 219 mm format and weighs 20.60 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 a B1 hold-down and 1 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 Optima YTR-5.0 is for
With 66 Ah, the Optima YTR-5.0 is the habitation battery for motorhomes, caravans and campers that need power off-grid. It recharges from the alternator, a solar panel or a mains charger. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 20.60 kg, 1 terminals and B1 hold-down.
The Optima YTR-5.0: Yellow Top range and spiral-cell AGM technology
The YTR-5.0 is part of the Optima Yellow Top range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
Spiral AGM construction winds the plates into cylindrical pure-lead cells: maximum active surface, extreme vibration resistance and cranking current far above a battery of the same size.
What Optima does differently
Optima makes spiral-cell (SpiralCell) AGM batteries with pure lead: maximum vibration resistance, very powerful cranking and a durability recognised in 4x4, motorsport, marine and car audio. We guarantee that every Optima arrives new, charged and with the manufacturer's full warranty.
Manufacturer's warranty
The Optima YTR-5.0 comes with the manufacturer's official warranty against manufacturing defects. Avoid repeated full discharges: they shorten its life and are not covered.
Usage and maintenance tips
During months of storage, keep it charged with a mains charger or a small solar panel; a battery left discharged for weeks loses capacity permanently. Avoid routinely discharging the leisure battery below 50% and recharge it fully after every trip.
When you get it and how to return it
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
BCOM-OPTIMA-YTR-5.0
Data sheet
- Brand
- OPTIMA
- Reference
- YTR-5.0
- Model
- OPTIMA YELLOW TOP
- Voltage (V)
- 12
- Capacity
- 66Ah (c20)
- Length
- 309.00 mm
- Width
- 172.00 mm
- Height
- 219.00 mm
- Weight
- 20.6 Kgs
- Technology
- AGM ESPIRAL
- Terminal layout
- Positive terminal on the right
- Terminal type
- 1
- Hold-down
- B1
- Cold cranking amps (EN)
- 845
- Capacity (C20)
- 66
Specific References
- EAN13
- 4016987141038
- MPN
- YTR-5.0
4,82/5
Verified purchasesLatest verified reviews
★★★★★Samuel Reyes
17/05/2026Muchas gracias por ayudarme
No tenía ni idea de cómo instalar una batería y me ayudaron. Al final fue fácil
★★★★★Domingo Gomez
27/01/2026Excelente guía
Usualmente no recibes un trato tan personalizado, pero en esta web me ayudaron con la elección y la instalación de la batería.
★★★★★Diego Crespo
29/12/2025Buena atención y entrega rápida
Pedí la batería un miércoles a las 4 y me llegó el jueves a las 2
★★★★★Jose Maria Alvarez
07/11/2025Gracias por su ayuda
No tenía ni idea de cómo instalar una bateria y me ayudaron. Al final fue fácil
Codes and references Optima YTR-5.0
| Brand | Optima · see all batteries Optima |
|---|---|
| Manufacturer range | OPTIMA YELLOW TOP |
| Manufacturer reference (MPN) | YTR-5.0 |
| Also known as | YTR5.0 · YTR 5.0 |
| EAN-13 barcode | 4016987141038 |
| Dimensions (length × width × height) | 309 × 172 × 219 mm (309x172x219) |
Recommended accessories
Compatible vehicles
The Optima YTR-5.0 fits 4 vehicles. Most searched below:
See all 4 compatible vehicles
How to change the battery
Guide to replace the leisure battery of your motorhome or caravan. Estimated time 15-25 minutes. Important: isolate the 12V auxiliary system before handling.
Step 1. Switch off 12V equipment and unplug shore power
Turn off fridge, lights, water pump, Truma Mover and other auxiliary loads. Disconnect the 230V shore power and solar panels if any.
Step 2. Locate the leisure battery compartment
On motorhomes usually under the driver/passenger seat, in an outside locker or in the garage area. Verify this is NOT the engine starter battery — that one is up front with the engine.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Loosen the bottom hold-down clamp with the same wrench. Lift the battery carefully (it can weigh 15-25 kg). Clean the tray with a brush and baking soda if there is corrosion.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the charger and auxiliary services
After connecting, check the combi charger (CBE/Schaudt/Nordelettronica) recognises the new battery: voltage should stabilise at 13.2-13.8 V with 230V connected. Test a couple of services (lights + pump) before heading out.
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 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.
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.
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 10:00–13:30 and 16:40–18:00 (Spanish time, 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.
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