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

![MK Battery ES26-12SA · Electric wheelchair battery 12V 26Ah](https://bateriasonline.es/2932-home_default/mk-battery-es26-12sa.jpg)

> MK Battery ES26-12SA: 26 Ah electric wheelchair battery, 166.1×175×125 mm, AGM. Equivalent to Long WP26-12 and Long WP26-12N.

**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-es26-12sa
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES26-12SA
- **MPN**: ES26-12SA
- **Price**: 92,02 € (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 | 7.98 kg |

## Quick description

MK Battery ES26-12SA: electric wheelchair battery with 12 V and 26 Ah, measuring 166.1 × 175 × 125 mm.

## Description

## The MK Battery ES26-12SA at a glance

The MK Battery ES26-12SA is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The ES26-12SA is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The ES26-12SA belongs to the MK Battery MK AGM range. [The full range of MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

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

Other AGM batteries that fit the ES26-12SA'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 ES26-12SA vs MU-1 SLD M-33 and MU-1 SLD M-2: which one to choose?

What sets the ES26-12SA apart from its neighbours in the MK Battery range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery ES26-12SA (this one) | 26 Ah | 166.1 × 175 × 125 | 7.98 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 ES26-12SA

The ES26-12SA is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## Before ordering the ES26-12SA, check this

- Length, width and height of the ES26-12SA: 166.1 × 175 × 125 mm.
- Your current battery should say about 26 Ah; a little more is also fine.

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

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

Compared with the ES26-12SA, 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 ES26-12SA (26 Ah). Mind the space: the MU-1 SLD M-33 measures 196.1 × 130 × 180.1 mm.

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

7.98 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 ES26-12SA?

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 ES26-12SA.

### Which charger does the MK Battery ES26-12SA need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## More batteries to compare with the ES26-12SA

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [More MK Battery models](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 · 2026-11-11*