# Wheelchair battery MK Powered M20-12 SLD M 12V 20Ah AGM

![Wheelchair battery MK Powered M20-12 SLD M 12V 20Ah AGM](https://baterias.com/276-home_default/battery-mk-m20-12-sld-m-12v-20ah.jpg)

> MK Powered M20-12 SLD M wheelchair battery 12V 20Ah AGM. Dimensions 181×75×166 mm. Deep-cycle and sealed, for daily wheelchair and mobility scooter use.

**Category:** [Power Wheelchair Batteries](https://baterias.com/gb/batteries-for-electric-wheelchairs) → [MK POWERED](https://baterias.com/gb/mk-powered)

- **Canonical URL**: https://baterias.com/gb/battery-mk-m20-12-sld-m-12v-20ah
- **Language**: en-GB
- **Brand**: MK POWERED
- **Reference**: BCOM-MK-M20-12 SLD M
- **MPN**: M20-12 SLD M
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK |
| Reference | M20-12 SLD M |
| Model | MK AGM |
| Voltage (V) | 12 V |
| Largo | 181.1 mm |
| Ancho | 75.9 mm |
| Alto | 166.9 mm |
| Peso | 6.04 kg |
| Tecnología | AGM |
| Capacity (C20) | 20 Ah (c20) |
| Capacity (C5) | 17 Ah (c5) |

## Quick description

**MK Powered M20-12 SLD M 12V 20Ah** is a sealed AGM/GEL battery for daily mobility use: maintenance-free, no risk of spills, and thousands of useful cycles well beyond a starter battery.

## Why this wheelchair battery?

- **Daily cycling without wear** handles deep discharges without losing capacity
- **Sealed AGM/GEL** no maintenance, no risk of spills
- **Thousands of useful cycles** over its full lifetime

🔌 Voltage
12 V

⚡ Capacity
20 Ah C20

📏 Dimensions
181×75×166 mm

⚙️ Technology
AGM

⚖️ Weight
6,04 kg

🏷️ Model
MK AGM

## Description

## Mobility battery MK Powered M20-12 SLD M Mk AGM 20Ah 12V

12*V* Voltage
20*Ah* Capacity
6.04*kg* Weight

The **MK Powered M20-12 SLD M** with AGM technology delivers **20 Ah** at **12 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Its 181 × 75 × 166 mm make it the exact replacement for the 20 Ah battery fitted as standard to many power wheelchairs and mobility scooters.
- Sealed AGM/GEL: safe indoors and in transport.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Approved for air and sea transport (VRLA).
- No maintenance, no water top-ups.

### What the MK Powered M20-12 SLD M is for

With 20 Ah, the MK Powered M20-12 SLD M offers the daily range that power wheelchairs, mobility scooters and light electric vehicles need, with a sealed construction that is safe indoors. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 6.04 kg.

### Will it fit your current battery tray?

It has external dimensions of 181 × 75 × 166 mm and weighs 6.04 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

### Why choose MK Powered batteries

MK batteries are the standard in the electric mobility sector: sealed, approved for air transport and with the consistency that wheelchair manufacturers demand as original equipment. We guarantee that every MK Powered arrives new, charged and with the manufacturer's full warranty.

### The MK Powered M20-12 SLD M: Mk AGM range and AGM technology

The M20-12 SLD M is part of the MK Powered **Mk AGM** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.

### Usage and maintenance tips

Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity.

### Manufacturer's warranty

The MK Powered M20-12 SLD M comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.

### Delivery times and returns

Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

## Frequently asked questions

### Is the M20-12 SLD M model AGM? What does this technology offer?

Yes. The M20-12 SLD M from MK Powered uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.

### How do I fit the M20-12 SLD M model in my device?

In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### What is the service life of the M20-12 SLD M model?

Expected lifespan of the MK Powered M20-12 SLD M is 5 to 8 years in mild-climate device use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the dimensions of the MK Powered M20-12 SLD M battery?

Dimensions (length × width × height) are 181×76×167 mm — also written as 181x76x167 mm — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### Which batteries are equivalent to the MK Powered M20-12 SLD M?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-19*