# MK Battery 8A31DT · Electric wheelchair battery 12V 105Ah

![MK Battery 8A31DT · Electric wheelchair battery 12V 105Ah](https://bateriasonline.es/2793-home_default/mk-battery-8a31dt.jpg)

> MK Battery 8A31DT: 105 Ah electric wheelchair battery, 328.4×171.2×238.8 mm, AGM. Equivalent to Fullriver HC110 and MK Battery 8A30 HEI.

**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-8a31dt
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-8A31DT
- **MPN**: 8A31DT
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 105 Ah |
| Length | 328.4 mm |
| Width | 171.2 mm |
| Height | 238.8 mm |
| Weight | 30.62 kg |

## Quick description

The MK Battery 8A31DT is an electric wheelchair battery with 12 V and 105 Ah, measuring 328.4 × 171.2 × 238.8 mm.

## Description

## Where the MK Battery 8A31DT fits

The MK Battery 8A31DT 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 8A31DT belongs to the MK Battery MK AGM range. [More MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## What it means that the 8A31DT is AGM

The 8A31DT 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 8A31DT vs 8A27 and 8A24 HEI

Torn between the 8A31DT and another similar MK Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery 8A31DT (this one) | 105 Ah | 328.4 × 171.2 × 238.8 | 30.62 kg |
| MK Battery 8A27 | 92 Ah | 325.9 × 166.6 × 240 | 27.9 kg |
| MK Battery 8A24 HEI | 79 Ah | 276.9 × 166.6 × 210.1 | 24.04 kg |

- MK Battery 8A27: 13 Ah less, a different case (325.9 × 166.6 × 240 mm).
- MK Battery 8A24 HEI: 26 Ah less, a different case (276.9 × 166.6 × 210.1 mm).

## Equivalents and alternatives to the MK Battery 8A31DT

Other AGM batteries that fit the 8A31DT's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Fullriver HC110 | AGM | 110 Ah | 330 × 173 × 237 |
| MK Battery 8A30 HEI | AGM | 105 Ah | 328.4 × 171.2 × 236.5 |

## Part numbers and codes for the MK Battery 8A31DT

The 8A31DT is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | 8A31DT |
|---|---|
| Not to be confused with | MK Battery 8G31DT (97.6 Ah) |

## Check this before ordering the MK Battery 8A31DT

- Capacity of the 8A31DT: 105 Ah; the same as your current battery or slightly more is fine.
- Measure the space: the 8A31DT takes up 328.4 × 171.2 × 238.8 mm.

## Frequently asked questions about the MK Battery 8A31DT

### 8A31DT or 8A27: which one suits me?

Compared with the 8A31DT, the MK Battery 8A27 has 13 Ah less. With 105 Ah, the 8A31DT runs longer between charges than the 8A27 (92 Ah). Mind the space: the 8A27 measures 325.9 × 166.6 × 240 mm.

### How much does the MK Battery 8A31DT weigh?

30.62 kg, with 105 Ah of capacity. For reference, the MK Battery 8A27 (92 Ah) weighs 27.9 kg.

### Which battery is equivalent to the MK Battery 8A31DT?

Only other AGM batteries with its dimensions and polarity: Fullriver HC110 and MK Battery 8A30 HEI. Neither an EFB nor a conventional battery replaces the 8A31DT.

### 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.

## Keep comparing: alternatives to the 8A31DT

- [More electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)
- [Fullriver HC110](https://bateriasonline.es/en/fullriver-hc110) · 110 Ah, 330×173×237 mm
- [MK Battery 8A30 HEI](https://bateriasonline.es/en/mk-battery-8a30-hei) · 105 Ah, 328.4×171.2×236.5 mm

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