# MK Battery ES12-12SA · Electric wheelchair battery 12V 12Ah

![MK Battery ES12-12SA · Electric wheelchair battery 12V 12Ah](https://bateriasonline.es/2875-home_default/mk-battery-es12-12sa.jpg)

> MK Battery ES12-12SA: 12 Ah electric wheelchair battery, 150.9×98×98 mm, AGM. Equivalent to Long WP12-12 and Long WP12-12A.

**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-es12-12sa
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES12-12SA
- **MPN**: ES12-12SA
- **Price**: 54,00 € (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 | 12 Ah |
| Length | 150.9 mm |
| Width | 98 mm |
| Height | 98 mm |
| Weight | 3.74 kg |

## Quick description

MK Battery ES12-12SA: electric wheelchair battery with 12 V and 12 Ah, measuring 150.9 × 98 × 98 mm.

## Description

## The MK Battery ES12-12SA at a glance

The MK Battery ES12-12SA 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 ES12-12SA belongs to the MK Battery MK AGM range. [See all MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## AGM technology in the ES12-12SA

Inside, the ES12-12SA has glass fibre separators (AGM) that hold the electrolyte. The ES12-12SA needs a charger with an AGM mode that does not exceed 14.7 V.

## MK Battery ES12-12SA vs ES14-12 and ES14-12TE: differences

What sets the ES12-12SA apart from its neighbours in the MK Battery range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery ES12-12SA (this one) | 12 Ah | 150.9 × 98 × 98 | 3.74 kg |
| MK Battery ES14-12 | 14 Ah | 150.9 × 98 × 100.1 | 4.39 kg |
| MK Battery ES14-12TE | 14 Ah | 150.9 × 99.1 × 96 | 4.39 kg |

- MK Battery ES14-12: 2 Ah more, a different case (150.9 × 98 × 100.1 mm).
- MK Battery ES14-12TE: 2 Ah more, the same dimensions.

## Equivalents and alternatives to the MK Battery ES12-12SA

As the ES12-12SA 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 | Dimensions (mm) |
|---|---|---|---|
| Long WP12-12 | AGM | 12 Ah | 151 × 98 × 98 |
| Long WP12-12A | AGM | 12 Ah | 151 × 98 × 98 |
| Long WP12-12E | AGM | 12 Ah | 151 × 98 × 98 |
| Kronobat ES12-12 | AGM | 12 Ah | 151 × 99 × 100 |
| Q-Battery 12LCP-12 | AGM | 13 Ah | 151 × 98 × 95 |
| Long WP14-12SE | AGM | 14 Ah | 151 × 98 × 100 |

## What to look at before buying the ES12-12SA

- With 12 Ah, the ES12-12SA replaces an original battery of that capacity or slightly less.
- The ES12-12SA needs 150.9 × 98 × 98 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the MK Battery ES12-12SA

### MK Battery ES12-12SA or ES14-12?

Compared with the ES12-12SA, the MK Battery ES14-12 has 2 Ah more. With 14 Ah, the ES14-12 runs longer between charges than the ES12-12SA (12 Ah). Mind the space: the ES14-12 measures 150.9 × 98 × 100.1 mm.

### How much does the MK Battery ES12-12SA weigh?

The ES12-12SA weighs 3.74 kg. For reference, the MK Battery ES14-12 (14 Ah) weighs 4.39 kg.

### Which battery is equivalent to the MK Battery ES12-12SA?

Only other AGM batteries with its dimensions and polarity: Long WP12-12, Long WP12-12A and Long WP12-12E. Neither an EFB nor a conventional battery replaces the ES12-12SA.

### Which charger does the MK Battery ES12-12SA 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.

## Keep comparing: alternatives to the ES12-12SA

- [More electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)
- [Long WP12-12](https://bateriasonline.es/en/long-wp12-12) · 12 Ah, 151×98×98 mm
- [Long WP12-12A](https://bateriasonline.es/en/long-wp12-12a) · 12 Ah, 151×98×98 mm

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