# MK Battery ES9-4 · Electric wheelchair battery 4V 9Ah

![MK Battery ES9-4 · Electric wheelchair battery 4V 9Ah](https://bateriasonline.es/3547-home_default/mk-battery-es9-4.jpg)

> MK Battery ES9-4: 9 Ah electric wheelchair battery, 101.1×43.9×102.1 mm, AGM. Ask for a no-obligation quote.

**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-es9-4
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES9-4
- **MPN**: ES9-4
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 4 V |
| Capacity | 9 Ah |
| Length | 101.1 mm |
| Width | 43.9 mm |
| Height | 102.1 mm |
| Weight | 1.18 kg |

## Quick description

MK Battery ES9-4: electric wheelchair battery with 4 V and 9 Ah, measuring 101.1 × 43.9 × 102.1 mm.

## Description

## Who the MK Battery ES9-4 is for

The MK Battery ES9-4 is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. It is fitted as a 12 V pair and takes hundreds of daily cycles, something a starter battery could not handle.
The ES9-4 belongs to the MK Battery MK AGM range. [More MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## Equivalents and alternatives to the MK Battery ES9-4

No other reference in the catalogue fully matches the dimensions and polarity of the ES9-4; you will find the closest ones among our [electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries).

## What it means that the ES9-4 is AGM

The ES9-4 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.

## Check this before ordering the MK Battery ES9-4

- Length, width and height of the ES9-4: 101.1 × 43.9 × 102.1 mm.
- Capacity of the ES9-4: 9 Ah; the same as your current battery or slightly more is fine.

## Frequently asked questions about the MK Battery ES9-4

### How much does the MK Battery ES9-4 weigh?

The ES9-4 weighs 1.18 kg.

### How much range does the MK Battery ES9-4 give in an electric wheelchair?

It depends on weight, terrain and the chair. As a guide, with 9 Ah per battery an average chair covers several kilometres a day; range drops with hills and cold batteries.

### What are the dimensions and weight of the MK Battery ES9-4?

It measures 101.1 × 43.9 × 102.1 mm and weighs 1.18 kg. Compare these figures with the tray and the hold-down clamp before ordering.

## More batteries to compare with the ES9-4

- [More electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)

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