# MK Battery ES26-12 · Electric wheelchair battery 12V 26Ah

![MK Battery ES26-12 · Electric wheelchair battery 12V 26Ah](https://bateriasonline.es/2930-home_default/mk-battery-es26-12.jpg)

> MK Battery ES26-12: 26 Ah electric wheelchair battery, 166.1×175×125 mm, positive terminal on the right, AGM. Equivalent to Long WP26-12.

**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-es26-12
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES26-12
- **EAN**: 3660766448538
- **MPN**: ES26-12
- **Price**: 82,32 € (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 | 26 Ah |
| Length | 166.1 mm |
| Width | 175 mm |
| Height | 125 mm |
| Weight | 9.28 kg |
| Polarity | Positive terminal on the right |

## Quick description

The MK Battery ES26-12 is an electric wheelchair battery with 12 V and 26 Ah, measuring 166.1 × 175 × 125 mm, with the positive terminal on the right.

## Description

## The MK Battery ES26-12 at a glance

The MK Battery ES26-12 is made for powered wheelchairs. It is fitted as a 12 V pair and takes hundreds of daily cycles, something a starter battery could not handle.
The ES26-12 belongs to the MK Battery MK AGM range. [See all MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## Equivalents and alternatives to the MK Battery ES26-12

Other AGM batteries that fit the ES26-12's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long WP26-12 | AGM | 26 Ah | 166 × 175 × 125 |
| Long WP26-12N | AGM | 26 Ah | 166 × 175 × 125 |
| Long WP26-12NE | AGM | 26 Ah | 166 × 175 × 125 |
| Kronobat ES26-12 | AGM | 26 Ah | 166 × 175 × 125 |
| Fullriver DCG26-12 | AGM | 26 Ah | 165 × 176 × 125 |
| Long WP24-12 | AGM | 24 Ah | 166 × 175 × 125 |

## MK Battery ES26-12 vs MU-1 SLD M-33 and MU-1 SLD M-2: which one to choose?

Torn between the ES26-12 and another similar MK Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|
| MK Battery ES26-12 (this one) | 26 Ah | 166.1 × 175 × 125 | right | 9.28 kg |
| MK Battery MU-1 SLD M-33 | 33 Ah | 196.1 × 130 × 180.1 | – | 10.48 kg |
| MK Battery MU-1 SLD M-2 | 35 Ah | 197 × 131 × 180 | – | 10.48 kg |

- MK Battery MU-1 SLD M-33: 7 Ah more, a different case (196.1 × 130 × 180.1 mm).
- MK Battery MU-1 SLD M-2: 9 Ah more, a different case (197 × 131 × 180 mm).

## AGM technology in the ES26-12

Inside, the ES26-12 has glass fibre separators (AGM) that hold the electrolyte. The ES26-12 needs a charger with an AGM mode that does not exceed 14.7 V.

## Before ordering the ES26-12, check this

- Measure the space: the ES26-12 takes up 166.1 × 175 × 125 mm.
- Polarity of the ES26-12: positive terminal on the right (if yours has it on the other side, the cables will not reach).
- Your current battery should say about 26 Ah; a little more is also fine.

## Part numbers and codes for the MK Battery ES26-12

This is how the MK Battery ES26-12 appears on the label and in parts catalogues:

| Commercial reference | ES26-12 |
|---|---|
| EAN | 3660766448538 |
| Not to be confused with | MK Battery ES2.9-12 (2.9 Ah), MK Battery ES22-12 (22 Ah), MK Battery ES26-12T (26 Ah) |

## Frequently asked questions about the MK Battery ES26-12

### ES26-12 or MU-1 SLD M-33: which one suits me?

Compared with the ES26-12, the MK Battery MU-1 SLD M-33 has 7 Ah more. With 33 Ah, the MU-1 SLD M-33 runs longer between charges than the ES26-12 (26 Ah). Mind the space: the MU-1 SLD M-33 measures 196.1 × 130 × 180.1 mm.

### How much does the MK Battery ES26-12 weigh?

9.28 kg, with 26 Ah of capacity. For reference, the MK Battery MU-1 SLD M-33 (33 Ah) weighs 10.48 kg.

### Which battery is equivalent to the MK Battery ES26-12?

Only other AGM batteries with its dimensions and polarity: Long WP26-12, Long WP26-12N and Long WP26-12NE. Neither an EFB nor a conventional battery replaces the ES26-12.

### Which side is the positive terminal on the MK Battery ES26-12?

On the ES26-12, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

## Other options if you are unsure about the ES26-12

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)
- [Long WP26-12](https://bateriasonline.es/en/long-wp26-12) · 26 Ah, 166×175×125 mm
- [Long WP26-12N](https://bateriasonline.es/en/long-wp26-12n) · 26 Ah, 166×175×125 mm

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