# MK Battery ES3-12R · Electric wheelchair battery 12V 2.8Ah

![MK Battery ES3-12R · Electric wheelchair battery 12V 2.8Ah](https://bateriasonline.es/3466-home_default/mk-battery-es3-12r.jpg)

> MK Battery ES3-12R: 2.8 Ah electric wheelchair battery, 133.1×33×103.9 mm, AGM. Compare sizes and equivalents; 14-day returns.

**Category:** [Electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries) → [MK Battery](https://bateriasonline.es/en/mk-batteries)

- **Canonical URL**: https://bateriasonline.es/en/mk-battery-es3-12r
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES3-12R
- **MPN**: ES3-12R
- **Price**: 47,73 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 2.8 Ah |
| Length | 133.1 mm |
| Width | 33 mm |
| Height | 103.9 mm |
| Weight | 1.12 kg |

## Quick description

The MK Battery ES3-12R is an electric wheelchair battery with 12 V and 2.8 Ah, measuring 133.1 × 33 × 103.9 mm.

## Description

## The MK Battery ES3-12R at a glance

The MK Battery ES3-12R is made for powered wheelchairs. With 2.8 Ah per battery, the ES3-12R is designed for a full charge every night.
The ES3-12R belongs to the MK Battery MK AGM range. [See all MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## What it means that the ES3-12R is AGM

Inside, the ES3-12R has glass fibre separators (AGM) that hold the electrolyte. The ES3-12R needs a charger with an AGM mode that does not exceed 14.7 V.

## MK Battery ES3-12R vs ES2-12SLM and ES2-12V: which one to choose?

How the ES3-12R compares with MK Battery batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery ES3-12R (this one) | 2.8 Ah | 133.1 × 33 × 103.9 | 1.12 kg |
| MK Battery ES2-12SLM | 2 Ah | 150.1 × 20.1 × 89.9 | 0.73 kg |
| MK Battery ES2-12V | 2 Ah | 143 × 23.1 × 64 | 0.65 kg |

- MK Battery ES2-12SLM: 0.80 Ah less, a different case (150.1 × 20.1 × 89.9 mm).
- MK Battery ES2-12V: 0.80 Ah less, a different case (143 × 23.1 × 64 mm).

## Equivalents and alternatives to the MK Battery ES3-12R

No other reference in the catalogue fully matches the dimensions and polarity of the ES3-12R; you will find the closest ones among our [electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries).

## MK Battery ES3-12R codes and part numbers

This is how the MK Battery ES3-12R appears on the label and in parts catalogues:

| Commercial reference | ES3-12R |
|---|---|
| Not to be confused with | MK Battery ES3-12 (3 Ah) |

## What to look at before buying the ES3-12R

- With 2.8 Ah, the ES3-12R replaces an original battery of that capacity or slightly less.
- Length, width and height of the ES3-12R: 133.1 × 33 × 103.9 mm.

## Frequently asked questions about the MK Battery ES3-12R

### MK Battery ES3-12R or ES2-12SLM?

Compared with the ES3-12R, the MK Battery ES2-12SLM has 0.80 Ah less. With 2.8 Ah, the ES3-12R runs longer between charges than the ES2-12SLM (2 Ah). Mind the space: the ES2-12SLM measures 150.1 × 20.1 × 89.9 mm.

### How much does the MK Battery ES3-12R weigh?

The ES3-12R weighs 1.12 kg. For reference, the MK Battery ES2-12SLM (2 Ah) weighs 0.73 kg.

### Do I have to replace both batteries at once?

Yes. Wheelchairs fit two batteries in series, and a new one next to a worn one becomes unbalanced and lasts much less.

## Keep comparing: alternatives to the ES3-12R

- [All electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)
- [MK Battery ES2.4-12L](https://bateriasonline.es/en/mk-battery-es2-4-12l) · 2.4 Ah, 178.1×34.5×66 mm

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