# Optima YTR-2.7J · Auxiliary battery 12V 38Ah 460A

![Optima YTR-2.7J · Auxiliary battery 12V 38Ah 460A](https://bateriasonline.es/3879-home_default/optima-ytr-2-7j.jpg)

> Optima YTR-2.7J (ETN 872176000): 38 Ah auxiliary battery, 460 A (EN), 237×129×227 mm, B24 case, spiral AGM. Equivalent to Optima YTR-2.7.

**Category:** [Auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries) → [Optima](https://bateriasonline.es/en/optima-batteries)

- **Canonical URL**: https://bateriasonline.es/en/optima-ytr-2-7j
- **Language**: en
- **Brand**: Optima
- **Reference**: BOL-OPTIMA-YTR-2.7J
- **EAN**: 4016987113622
- **MPN**: YTR-2.7J
- **Price**: 203,17 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Optima |
| Range | OPTIMA YELLOW TOP |
| Application | Auxiliary and back-up use |
| Technology | Spiral AGM |
| Voltage | 12 V |
| Capacity | 38 Ah |
| Cold cranking amps (EN) | 460 A |
| Length | 237 mm |
| Width | 129 mm |
| Height | 227 mm |
| Weight | 12.4 kg |
| Terminal layout | J0 |
| Case size | B24 (238 × 129 × 227 mm) |
| ETN code | 872176000 |

## Quick description

Optima YTR-2.7J (ETN 872 176 000, also written 872176000): auxiliary battery (spiral AGM) with 12 V, 38 Ah and 460 A cold cranking current, case size B24 (237 × 129 × 227 mm).

## Description

## The Optima YTR-2.7J at a glance

The Optima YTR-2.7J is an auxiliary vehicle battery: it powers back-up functions such as Start-Stop, electric steering or the emergency system while the main battery starts the engine. Without it, Start-Stop or back-up warnings appear on the dashboard.
The YTR-2.7J belongs to the Optima OPTIMA YELLOW TOP range. [The full range of Optima batteries](https://bateriasonline.es/en/optima-batteries)

## Equivalents and alternatives to the Optima YTR-2.7J

As the YTR-2.7J is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Optima YTR-2.7 | Spiral AGM | 38 Ah | 460 A | 237 × 129 × 227 |
| Optima YTS-2.7 | Spiral AGM | 38 Ah | 460 A | 237 × 129 × 227 |
| Optima YTS-2.7J | Spiral AGM | 38 Ah | 460 A | 237 × 129 × 227 |

## What it means that the YTR-2.7J is spiral AGM

The YTR-2.7J is a spiral-cell AGM battery. Perfect for 4x4s, marine use and vehicles with lots of electronics.

## What to look at before buying the YTR-2.7J

- Measure the space: the YTR-2.7J takes up 237 × 129 × 227 mm (European case size B24).
- Capacity of the YTR-2.7J: 38 Ah; the same as your current battery or slightly more is fine.
- The YTR-2.7J delivers 460 A cold cranking (EN standard); do not go below what your original battery states.

## Optima YTR-2.7J codes and part numbers

Look for any of these YTR-2.7J codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | YTR-2.7J |
|---|---|
| ETN code | 872176000 (also 872 176 000) |
| EAN | 4016987113622 |
| Case size (EN) | B24 |
| Case size according to Optima | 51R (BCI) |
| Base hold-down | B00 |
| Also known as | Optima 872176000 · Optima 872 176 000 |
| Not to be confused with | Optima YTR-2.7 (38 Ah, 460 A, positive terminal on the right) |

## Frequently asked questions about the Optima YTR-2.7J

### What is the ETN code of the Optima YTR-2.7J?

872176000, also written 872 176 000. The ETN (European Type Number) is printed on the label and used in parts catalogues.

### How much does the Optima YTR-2.7J weigh?

The YTR-2.7J weighs 12.4 kg.

### Which battery is equivalent to the Optima YTR-2.7J?

Only other AGM batteries with its dimensions and polarity: Optima YTR-2.7, Optima YTS-2.7 and Optima YTS-2.7J. Neither an EFB nor a conventional battery replaces the YTR-2.7J.

### What case size is the Optima YTR-2.7J?

Case size B24: 237 × 129 × 227 mm (Optima lists it as 51R (BCI)). The YTR-2.7J fits any standard B24 battery tray such as the Optima YTR-2.7.

### What is the cold cranking current of the Optima YTR-2.7J?

460 A to the EN standard, with 38 Ah capacity.

### Which charger does the Optima YTR-2.7J need?

A charger with an AGM mode. If the battery has dropped below 10.5 V some chargers will not recognise it: use one with a recovery mode or one specific to spiral AGM.

## Other options if you are unsure about the YTR-2.7J

- [Other auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [More Optima models](https://bateriasonline.es/en/optima-batteries)
- [Fullriver FT438-U1R](https://bateriasonline.es/en/fullriver-ft438-u1r) · 35 Ah, 438 A, 196×131×192 mm
- [Exide EK500](https://bateriasonline.es/en/exide-ek500) · 50 Ah, 570 A, 207×175×190 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*