# MK Battery ES4-6SA · Electric wheelchair battery 6V 4Ah

![MK Battery ES4-6SA · Electric wheelchair battery 6V 4Ah](https://bateriasonline.es/3484-home_default/mk-battery-es4-6sa.jpg)

> MK Battery ES4-6SA: 4 Ah electric wheelchair battery, 70.1×47×105.9 mm, AGM. Equivalent to MK Battery ES4-6. Price on request: ask for a free 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-es4-6sa
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-ES4-6SA
- **MPN**: ES4-6SA
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 6 V |
| Capacity | 4 Ah |
| Length | 70.1 mm |
| Width | 47 mm |
| Height | 105.9 mm |
| Weight | 0.74 kg |

## Quick description

The MK Battery ES4-6SA is an electric wheelchair battery with 6 V and 4 Ah, measuring 70.1 × 47 × 105.9 mm.

## Description

## Who the MK Battery ES4-6SA is for

The MK Battery ES4-6SA is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. With 4 Ah per battery, the ES4-6SA is designed for a full charge every night.
The ES4-6SA belongs to the MK Battery MK AGM range. [The full range of MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## AGM technology in the ES4-6SA

The ES4-6SA 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.

## MK Battery ES4-6SA vs ES4-6 and ES3-6H: which one to choose?

Torn between the ES4-6SA and another similar MK Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery ES4-6SA (this one) | 4 Ah | 70.1 × 47 × 105.9 | 0.74 kg |
| MK Battery ES4-6 | 4.5 Ah | 70.1 × 47 × 105.9 | 0.82 kg |
| MK Battery ES3-6H | 2.8 Ah | 66 × 33 × 103.9 | 0.57 kg |

- MK Battery ES4-6: 0.5 Ah more, the same dimensions.
- MK Battery ES3-6H: 1.20 Ah less, a different case (66 × 33 × 103.9 mm).

## Equivalents and alternatives to the MK Battery ES4-6SA

Other AGM batteries that fit the ES4-6SA's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| MK Battery ES4-6 | AGM | 4.5 Ah | 70.1 × 47 × 105.9 |

## Check this before ordering the MK Battery ES4-6SA

- With 4 Ah, the ES4-6SA replaces an original battery of that capacity or slightly less.
- Measure the space: the ES4-6SA takes up 70.1 × 47 × 105.9 mm.

## Frequently asked questions about the MK Battery ES4-6SA

### ES4-6SA or ES4-6: which one suits me?

Compared with the ES4-6SA, the MK Battery ES4-6 has 0.5 Ah more. With 4.5 Ah, the ES4-6 runs longer between charges than the ES4-6SA (4 Ah). Both measure 70.1 × 47 × 105.9 mm, so they fit the same tray.

### How much does the MK Battery ES4-6SA weigh?

0.74 kg, with 4 Ah of capacity. For reference, the MK Battery ES4-6 (4.5 Ah) weighs 0.82 kg.

### Which battery is equivalent to the MK Battery ES4-6SA?

Only other AGM batteries with its dimensions and polarity: MK Battery ES4-6. Neither an EFB nor a conventional battery replaces the ES4-6SA.

### 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.

## More batteries to compare with the ES4-6SA

- [All electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full MK Battery catalogue](https://bateriasonline.es/en/mk-batteries)
- [MK Battery ES4-6](https://bateriasonline.es/en/mk-battery-es4-6) · 4.5 Ah, 70.1×47×105.9 mm

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