# MK Battery E31 SLD G ST · Electric wheelchair battery 12V 97.6Ah

![MK Battery E31 SLD G ST · Electric wheelchair battery 12V 97.6Ah](https://bateriasonline.es/2851-home_default/mk-battery-e31-sld-g-st.jpg)

> MK Battery E31 SLD G ST: 97.6 Ah electric wheelchair battery, 328.4×171.2×237 mm, GEL. Equivalent to Deka 8G31 and MK Battery 8G31.

**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-e31-sld-g-st
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-E31 SLD G ST
- **EAN**: 3660766462657
- **MPN**: E31 SLD G ST
- **Price**: 391,90 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK GEL |
| Application | Electric wheelchairs |
| Technology | GEL |
| Voltage | 12 V |
| Capacity | 97.6 Ah |
| Length | 328.4 mm |
| Width | 171.2 mm |
| Height | 237 mm |
| Weight | 31.07 kg |
| Terminal type | ST |

## Quick description

MK Battery E31 SLD G ST: electric wheelchair battery with 12 V and 97.6 Ah, measuring 328.4 × 171.2 × 237 mm.

## Description

## The MK Battery E31 SLD G ST at a glance

The MK Battery E31 SLD G ST is made for powered wheelchairs. With 97.6 Ah per battery, the E31 SLD G ST is designed for a full charge every night.
The E31 SLD G ST belongs to the MK Battery MK GEL range. [More MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## Inside the E31 SLD G ST: GEL technology

Inside, the E31 SLD G ST holds its electrolyte in gel form. To charge the E31 SLD G ST, use a charger with a gel profile.

## MK Battery E31 SLD G ST vs E27 SLD G, 8G30H and E31 SLD G

The real differences between the E31 SLD G ST and the closest MK Battery models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery E31 SLD G ST (this one) | 97.6 Ah | 328.4 × 171.2 × 237 | 31.07 kg |
| MK Battery E27 SLD G | 88 Ah | 325.9 × 166.6 × 237 | 28.12 kg |
| MK Battery 8G30H | 97.6 Ah | 328.4 × 171.2 × 247.7 | 31.07 kg |
| MK Battery E31 SLD G | 97.6 Ah | 328.4 × 171.2 × 247.7 | 31.07 kg |
| MK Battery M27 SLD G | 88 Ah | 325.9 × 166.6 × 237 | 28.12 kg |

- MK Battery E27 SLD G: 9.60 Ah less, a different case (325.9 × 166.6 × 237 mm).
- MK Battery 8G30H: the same capacity, a different height (247.7 mm instead of 237 mm). It only fits if there is room for 247.7 mm of height.
- MK Battery E31 SLD G: the same capacity, a different height (247.7 mm instead of 237 mm). It only fits if there is room for 247.7 mm of height.
- MK Battery M27 SLD G: 9.60 Ah less, a different case (325.9 × 166.6 × 237 mm).

## Equivalents and alternatives to the MK Battery E31 SLD G ST

Other gel batteries with the dimensions and polarity of the E31 SLD G ST: with gel it is best to stay with gel, because the charging profile is different.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Deka 8G31 | GEL | 97.6 Ah | 328.4 × 171.5 × 237.2 |
| MK Battery 8G31 | GEL | 97.6 Ah | 328.4 × 171.2 × 237 |
| MK Battery 8G31DT | GEL | 97.6 Ah | 328.4 × 171.2 × 238.8 |

## MK Battery E31 SLD G ST codes and part numbers

This is how the MK Battery E31 SLD G ST appears on the label and in parts catalogues:

| Commercial reference | E31 SLD G ST |
|---|---|
| EAN | 3660766462657 |
| Terminal type | ST |

## What to look at before buying the E31 SLD G ST

- With 97.6 Ah, the E31 SLD G ST replaces an original battery of that capacity or slightly less.
- Measure the space: the E31 SLD G ST takes up 328.4 × 171.2 × 237 mm.

## Frequently asked questions about the MK Battery E31 SLD G ST

### MK Battery E31 SLD G ST or E27 SLD G?

Compared with the E31 SLD G ST, the MK Battery E27 SLD G has 9.60 Ah less. With 97.6 Ah, the E31 SLD G ST runs longer between charges than the E27 SLD G (88 Ah). Mind the space: the E27 SLD G measures 325.9 × 166.6 × 237 mm.

### MK Battery E31 SLD G ST or 8G30H/E31 SLD G: what changes?

Mainly the height: the E31 SLD G ST is 237 mm tall and the MK Battery 8G30H 247.7 mm, with the same length and width and 97.6 Ah against 97.6 Ah. The MK Battery E31 SLD G is 247.7 mm tall, with 97.6 Ah and A. Before choosing between the E31 SLD G ST and the 8G30H, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the MK Battery E31 SLD G ST weigh?

The E31 SLD G ST weighs 31.07 kg. For reference, the MK Battery E27 SLD G (88 Ah) weighs 28.12 kg.

### Which battery is equivalent to the MK Battery E31 SLD G ST?

For the E31 SLD G ST, other gel batteries with its size and polarity: Deka 8G31, MK Battery 8G31 and MK Battery 8G31DT.

### Which charger does the MK Battery E31 SLD G ST need?

A charger with a GEL mode not exceeding 14.1-14.4 V. Charging it with a conventional lead-acid profile damages it through overcharging.

## More batteries to compare with the E31 SLD G ST

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [The whole MK Battery range](https://bateriasonline.es/en/mk-batteries)
- [Deka 8G31](https://bateriasonline.es/en/deka-8g31) · 97.6 Ah, 328.4×171.5×237.2 mm
- [MK Battery 8G31](https://bateriasonline.es/en/mk-battery-8g31) · 97.6 Ah, 328.4×171.2×237 mm

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