Optima YTR-5.0 · Caravan battery 12V 66Ah 845A AGM
Caravan battery Optima YTR-5.0 12V 66Ah 845A AGM images
Specifications
| Brand | OPTIMA |
|---|---|
| Part number | YTR-5.0 |
| Voltage (V) | 12 |
| Capacity | 66Ah (c20) |
| Capacity (C20) | 66 |
| Cold cranking amps (EN) | 845 |
| Technology | AGM ESPIRAL |
| Length | 309.00 mm |
| Width | 172.00 mm |
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
Leisure battery Optima YTR-5.0 Yellow Top 66Ah 845A 12V
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.
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ReferenceBCOM-OPTIMA-YTR-5.0
Data sheet
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BrandOPTIMA
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ReferenceYTR-5.0
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ModelOPTIMA YELLOW TOP
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Voltage (V)12
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Capacity66Ah (c20)
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Length309.00 mm
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Width172.00 mm
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Height219.00 mm
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Weight20.6 Kgs
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TechnologyAGM ESPIRAL
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Terminal layoutPositive terminal on the right
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Terminal type1
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Hold-downB1
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Cold cranking amps (EN)845
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Capacity (C20)66
Specific References
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EAN134016987141038
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MPNYTR-5.0
Codes and references Optima YTR-5.0
| Brand | Optima · see all Optima batteries |
|---|---|
| Manufacturer range | OPTIMA YELLOW TOP |
| Manufacturer part number (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
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 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 (−). 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.
What polarity does the Optima YTR-5.0 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.
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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