Optima YTS-2.7J · Auxiliary battery 12V 38Ah 460A AGM
Specifications
| Brand | OPTIMA |
|---|---|
| Part number | YTS-2.7J |
| Voltage (V) | 12 |
| Capacity (C20) | 38Ah (c20) |
| Capacity (C5) | 33Ah (c5) |
| Technology | AGM ESPIRAL |
| Length | 237.00 mm |
| Width | 129.00 mm |
| Height | 201.00 mm |
€191.80
VAT included
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Optima YTS-2.7J 12V 38Ah 460A is an auxiliary battery: it supports the Start-Stop system and on-board electronics during stops, without draining the main battery.
Why this auxiliary battery?
- Designed for Start-Stopbuilt for the intensive cycling of modern cars
- 2 to 3 times longer lifevs fitting a cheap conventional battery
- Fast recoveryrecharges in minutes once the engine is running
Voltage
12 V
Capacity
38 Ah
Cold cranking
460 A
Dimensions
237×129×227 mm
Technology
AGM ESPIRAL
Polarity
Positive on the left
Weight
12,4 kg
Model
OPTIMA YELLOW TOP
Leisure battery Optima YTS-2.7J Yellow Top 38Ah 460A 12V
12VVoltage
38AhCapacity
460ACold cranking
12.40kgWeight
The 12 V, 38 Ah Optima YTS-2.7J battery from the Yellow Top range with spiral-cell AGM technology is designed for motorhomes, caravans and campers that need power off-grid. It measures 237 × 129 × 201 mm and the positive terminal on the left, the format sought by anyone replacing a 38 Ah battery in motorhomes and caravans.
- Low self-discharge during months of storage.
- Sealed and gas-free: suitable for installation inside the living area.
- Power for fridge, lighting, water pump and USB off-grid.
- Spiral cells: maximum vibration resistance and very powerful cranking.
Vehicles compatible with the Optima YTS-2.7J
The Optima YTS-2.7J is compatible with more than 9 vehicles: it is fitted as original equipment or as a replacement by brands such as Toyota and Lexus. It is a go-to option when you need a battery for a Toyota, Lexus or other models that use this same format. It is checked against 2 original-equipment references from different manufacturers.
The Optima YTS-2.7J: Yellow Top range and spiral-cell AGM technology
Within the Optima catalogue, the Yellow Top series groups the references designed for this use. The YTS-2.7J is the 38 Ah model of that family, with the same performance as its siblings in other sizes.
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.
Dimensions, polarity and mounting
In terms of format, the Optima YTS-2.7J measures 237 × 129 × 201 mm (length × width × height) and weighs 12.40 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses 3 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
Why choose Optima batteries
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.
Care and maintenance
Charge with a voltage-controlled AGM charger; a fully discharged pure-lead battery may need a specific charger to recover. 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.
Official warranty
The Optima YTS-2.7J comes with the manufacturer's official warranty against manufacturing defects. Avoid repeated full discharges: they shorten its life and are not covered.
Shipping, delivery and returns
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
BCOM-OPTIMA-YTS-2.7J
Data sheet
- Brand
- OPTIMA
- Reference
- YTS-2.7J
- Model
- OPTIMA YELLOW TOP
- Voltage (V)
- 12
- Length
- 237.00 mm
- Width
- 129.00 mm
- Height
- 201.00 mm
- Weight
- 12.4 Kgs
- Technology
- AGM ESPIRAL
- EAN
- 4016987113608
- Terminal layout
- Positive terminal on the left
- Terminal type
- 3
- Cold cranking amps (EN)
- 460A
- Capacity (C20)
- 38Ah (c20)
- Capacity (C5)
- 33Ah (c5)
- ETN
- 8701760018882
Specific References
- EAN13
- 4016987113608
- MPN
- YTS-2.7J
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★★★★★Ramon Campos
11/01/2026Super bien
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★★★★★Lucas Vicente
25/12/2025Atención inmejorable
Resolvieron todas mis dudas
Codes and references Optima YTS-2.7J
| Brand | Optima · see all batteries Optima |
|---|---|
| Manufacturer range | OPTIMA YELLOW TOP |
| Manufacturer reference (MPN) | YTS-2.7J |
| ETN code | 8701760018882 (short form 870 176 001) |
| EAN-13 barcode | 4016987113608 |
| Dimensions (length × width × height) | 237 × 129 × 227 mm (237x129x227) |
Comparison: Optima YTS-2.7J vs equivalents
The Optima YTS-2.7J is interchangeable with these equivalent references: A11 (Varta), EK457 (Exide), TK457 (Tudor).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Optima
YTS-2.7J
This battery
|
12V 38Ah 460A | AGM | €191.80 |
Varta
A11
|
12V 45Ah 370A | AGM | €138.60 |
Exide
EK457
|
45Ah 380A | AGM | €212.40 |
Tudor
TK457
|
45Ah 380A | AGM | €212.40 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Compatible vehicles
The Optima YTS-2.7J fits 9 vehicles. Most searched below:
See all 9 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 YTS-2.7J an AGM battery and what are the benefits of AGM?
Yes. The YTS-2.7J 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 is the Optima YTS-2.7J battery installed in the vehicle?
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 service life of the YTS-2.7J model?
Expected lifespan of the Optima YTS-2.7J 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 measurements of the YTS-2.7J model?
Dimensions (length × width × height) are 237×129×227 mm — also written as 237x129x227 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 barcode does this battery have?
The manufacturer reference (MPN) is YTS-2.7J and its ETN code is 8701760018882 (short form 870 176 001), the European identifier used in spare-part catalogues. The EAN-13 barcode is 4016987113608. It belongs to the OPTIMA YELLOW TOP range. Any of these codes identifies exactly this battery when requesting quotes or comparing prices.
Does this 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 YTS-2.7J fits 9 verified vehicle versions in our database.
Which batteries are equivalent to the Optima YTS-2.7J?
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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