# MK Battery 8A22NF · Electric wheelchair battery 12V 55Ah

![MK Battery 8A22NF · Electric wheelchair battery 12V 55Ah](https://bateriasonline.es/2782-home_default/mk-battery-8a22nf.jpg)

> MK Battery 8A22NF: 55 Ah electric wheelchair battery, 243.8×138.9×234.7 mm, AGM. Equivalent to Deka 8A22NF and MK Battery M22NF SLD A.

**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-8a22nf
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-8A22NF
- **MPN**: 8A22NF
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 55 Ah |
| Length | 243.8 mm |
| Width | 138.9 mm |
| Height | 234.7 mm |
| Weight | 16.78 kg |

## Quick description

The MK Battery 8A22NF is an electric wheelchair battery with 12 V and 55 Ah, measuring 243.8 × 138.9 × 234.7 mm.

## Description

## Where the MK Battery 8A22NF fits

The MK Battery 8A22NF is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The 8A22NF is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The 8A22NF 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 8A22NF

As the 8A22NF 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) |
|---|---|---|---|
| Deka 8A22NF | AGM | 55 Ah | 243.8 × 138.9 × 234.7 |
| MK Battery M22NF SLD A | AGM | 55 Ah | 243.8 × 138.9 × 234.7 |

## MK Battery 8A22NF vs M22NF-HC and M62-12 SLD M: which one to choose?

Torn between the 8A22NF and another similar MK Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery 8A22NF (this one) | 55 Ah | 243.8 × 138.9 × 234.7 | 16.78 kg |
| MK Battery M22NF-HC | 48.4 Ah | 228.3 × 138.9 × 210.1 | 18.14 kg |
| MK Battery M62-12 SLD M | 65 Ah | 226 × 135 × 214 | 18.7 kg |

- MK Battery M22NF-HC: 6.60 Ah less, a different case (228.3 × 138.9 × 210.1 mm).
- MK Battery M62-12 SLD M: 10 Ah more, a different case (226 × 135 × 214 mm).

## What it means that the 8A22NF is AGM

The 8A22NF 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 8A22NF, check this

- Measure the space: the 8A22NF takes up 243.8 × 138.9 × 234.7 mm.
- Capacity of the 8A22NF: 55 Ah; the same as your current battery or slightly more is fine.

## MK Battery 8A22NF codes and part numbers

The 8A22NF is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | 8A22NF |
|---|---|
| Not to be confused with | MK Battery 8G22NF (51 Ah) |

## Frequently asked questions about the MK Battery 8A22NF

### MK Battery 8A22NF or M22NF-HC?

Compared with the 8A22NF, the MK Battery M22NF-HC has 6.60 Ah less. With 55 Ah, the 8A22NF runs longer between charges than the M22NF-HC (48.4 Ah). Mind the space: the M22NF-HC measures 228.3 × 138.9 × 210.1 mm.

### How much does the MK Battery 8A22NF weigh?

The 8A22NF weighs 16.78 kg. For reference, the MK Battery M22NF-HC (48.4 Ah) weighs 18.14 kg.

### Which battery is equivalent to the MK Battery 8A22NF?

Only other AGM batteries with its dimensions and polarity: Deka 8A22NF and MK Battery M22NF SLD A. Neither an EFB nor a conventional battery replaces the 8A22NF.

### Which charger does the MK Battery 8A22NF 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 8A22NF

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [More MK Battery models](https://bateriasonline.es/en/mk-batteries)
- [Ritar RA12-55A](https://bateriasonline.es/en/ritar-ra12-55a) · 58 Ah, 229×138×235 mm

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