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

![MK Battery MU-1 SLD M · Electric wheelchair battery 12V 35Ah](https://bateriasonline.es/3611-home_default/mk-battery-mu-1-sld-m.jpg)

> MK Battery MU-1 SLD M: 35 Ah electric wheelchair battery, 196.1×130×180.1 mm, AGM. Equivalent to Ritar RA12-33 and Long U1-34H.

**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
- **Language**: en
- **Brand**: MK Battery
- **Reference**: BOL-MK-MU-1 SLD M
- **EAN**: 8404653009076
- **MPN**: MU-1 SLD M
- **Price**: 80,77 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK Battery |
| Range | MK AGM |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 35 Ah |
| Length | 196.1 mm |
| Width | 130 mm |
| Height | 180.1 mm |
| Weight | 10.48 kg |

## Quick description

MK Battery MU-1 SLD M: electric wheelchair battery with 12 V and 35 Ah, measuring 196.1 × 130 × 180.1 mm.

## Description

## The MK Battery MU-1 SLD M at a glance

The MK Battery MU-1 SLD M is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The MU-1 SLD M is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The MU-1 SLD M 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 MU-1 SLD M

As the MU-1 SLD M 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) |
|---|---|---|---|
| Ritar RA12-33 | AGM | 35 Ah | 195 × 130 × 180 |
| 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 |

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

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

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| MK Battery MU-1 SLD M (this one) | 35 Ah | 196.1 × 130 × 180.1 | 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).

## What it means that the MU-1 SLD M is AGM

The MU-1 SLD M is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the MU-1 SLD M can be fitted in the boot or under a seat with no risk of spills.

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

- The MU-1 SLD M needs 196.1 × 130 × 180.1 mm of space: measure it with the hold-down clamp in place.
- With 35 Ah, the MU-1 SLD M replaces an original battery of that capacity or slightly less.

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

Look for any of these MU-1 SLD M codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | MU-1 SLD M |
|---|---|
| EAN | 8404653009076 |
| Not to be confused with | MK Battery MU-1 SLD A (32 Ah), MK Battery MU-1 SLD G (31.6 Ah), MK Battery MU-1 SLD M-2 (35 Ah) |

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

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

Compared with the MU-1 SLD M, the MK Battery MU-1 SLD M-33 has 2 Ah less. With 35 Ah, the MU-1 SLD M runs longer between charges than the MU-1 SLD M-33 (33 Ah). Both measure 196.1 × 130 × 180.1 mm, so they fit the same tray.

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

The MU-1 SLD M 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?

Only other AGM batteries with its dimensions and polarity: Ritar RA12-33, Long U1-34H and Long U1-34HE. Neither an EFB nor a conventional battery replaces the MU-1 SLD M.

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

## Other options if you are unsure about the MU-1 SLD M

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full MK Battery catalogue](https://bateriasonline.es/en/mk-batteries)
- [Ritar RA12-33](https://bateriasonline.es/en/ritar-ra12-33) · 35 Ah, 195×130×180 mm
- [Long U1-34H](https://bateriasonline.es/en/long-u1-34h) · 34 Ah, 197×131×180 mm

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