# MK Battery MU-1 SLD M-2 · Electric wheelchair battery 12V 35Ah

![MK Battery MU-1 SLD M-2 · Electric wheelchair battery 12V 35Ah](https://bateriasonline.es/3614-home_default/mk-battery-mu-1-sld-m-2.jpg)

> MK Battery MU-1 SLD M-2: 35 Ah electric wheelchair battery, 197×131×180 mm, AGM. Equivalent to Long U1-34H and Long U1-34HE.

**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-mu-1-sld-m-2
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-MU-1 SLD M-2
- **MPN**: MU-1 SLD M-2
- **Price**: 138,49 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 35 Ah |
| Length | 197 mm |
| Width | 131 mm |
| Height | 180 mm |
| Weight | 10.48 kg |
| Terminal type | F4 |

## Quick description

MK Battery MU-1 SLD M-2: electric wheelchair battery with 12 V and 35 Ah, measuring 197 × 131 × 180 mm.

## Description

## Where the MK Battery MU-1 SLD M-2 fits

The MK Battery MU-1 SLD M-2 is made for powered wheelchairs. The MU-1 SLD M-2 is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The MU-1 SLD M-2 belongs to the MK Battery MK AGM range. [The full range of MK Battery batteries](https://bateriasonline.es/en/mk-batteries)

## Inside the MU-1 SLD M-2: AGM technology

Inside, the MU-1 SLD M-2 has glass fibre separators (AGM) that hold the electrolyte. The MU-1 SLD M-2 needs a charger with an AGM mode that does not exceed 14.7 V.

## MK Battery MU-1 SLD M-2 vs MU-1 SLD M-33 and 8AU1H

What sets the MU-1 SLD M-2 apart from its neighbours in the MK Battery range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery MU-1 SLD M-2 (this one) | 35 Ah | 197 × 131 × 180 | 10.48 kg |
| MK Battery MU-1 SLD M-33 | 33 Ah | 196.1 × 130 × 180.1 | 10.48 kg |
| MK Battery 8AU1H | 32 Ah | 213.6 × 131.6 × 183.4 | 10.43 kg |

- MK Battery MU-1 SLD M-33: 2 Ah less, the same dimensions.
- MK Battery 8AU1H: 3 Ah less, a different case (213.6 × 131.6 × 183.4 mm).

## Equivalents and alternatives to the MK Battery MU-1 SLD M-2

As the MU-1 SLD M-2 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) |
|---|---|---|---|
| Long U1-34H | AGM | 34 Ah | 197 × 131 × 180 |
| Long U1-34HE | AGM | 34 Ah | 197 × 131 × 180 |
| Long U1-36HE | AGM | 36 Ah | 197 × 131 × 180 |
| Kronobat ES34-12 | AGM | 34 Ah | 197 × 131 × 180 |
| Long U1-33H | AGM | 33 Ah | 197 × 131 × 180 |
| Ritar RA12-33 | AGM | 35 Ah | 195 × 130 × 180 |

## MK Battery MU-1 SLD M-2 codes and part numbers

This is how the MK Battery MU-1 SLD M-2 appears on the label and in parts catalogues:

| Commercial reference | MU-1 SLD M-2 |
|---|---|
| Terminal type | F4 |
| Not to be confused with | MK Battery MU-1 SLD M (35 Ah) |

## Check this before ordering the MK Battery MU-1 SLD M-2

- With 35 Ah, the MU-1 SLD M-2 replaces an original battery of that capacity or slightly less.
- Measure the space: the MU-1 SLD M-2 takes up 197 × 131 × 180 mm.

## Frequently asked questions about the MK Battery MU-1 SLD M-2

### MK Battery MU-1 SLD M-2 or MU-1 SLD M-33?

Compared with the MU-1 SLD M-2, the MK Battery MU-1 SLD M-33 has 2 Ah less. With 35 Ah, the MU-1 SLD M-2 runs longer between charges than the MU-1 SLD M-33 (33 Ah). Both measure 197 × 131 × 180 mm, so they fit the same tray.

### How much does the MK Battery MU-1 SLD M-2 weigh?

The MU-1 SLD M-2 weighs 10.48 kg. For reference, the MK Battery MU-1 SLD M-33 (33 Ah) weighs 10.48 kg.

### Which battery is equivalent to the MK Battery MU-1 SLD M-2?

Only other AGM batteries with its dimensions and polarity: Long U1-34H, Long U1-34HE and Long U1-36HE. Neither an EFB nor a conventional battery replaces the MU-1 SLD M-2.

### Which charger does the MK Battery MU-1 SLD M-2 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.

## Keep comparing: alternatives to the MU-1 SLD M-2

- [More electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full MK Battery catalogue](https://bateriasonline.es/en/mk-batteries)
- [Long U1-34H](https://bateriasonline.es/en/long-u1-34h) · 34 Ah, 197×131×180 mm
- [Long U1-34HE](https://bateriasonline.es/en/long-u1-34he) · 34 Ah, 197×131×180 mm

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