# Wheelchair battery MK Powered M50-12 SLD M 12V 50Ah AGM

![Wheelchair battery MK Powered M50-12 SLD M 12V 50Ah AGM](https://baterias.com/289-home_default/battery-mk-m50-12-sld-m-agm-12v-50ah.jpg)

> MK Powered M50-12 SLD M wheelchair battery 12V 50Ah AGM. Dimensions 198×166×170 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-m50-12-sld-m-agm-12v-50ah
- **Language**: en-GB
- **Brand**: MK POWERED
- **Reference**: BCOM-MK-M50-12 SLD M
- **EAN**: 3660766448583
- **MPN**: M50-12 SLD M
- **Price**: 154,90 €
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK |
| Reference | M50-12 SLD M |
| Model | MK AGM |
| Voltage (V) | 12 V |
| Largo | 198.9 mm |
| Ancho | 166.1 mm |
| Alto | 170.9 mm |
| Peso | 15.06 kg |
| Tecnología | AGM |
| Terminal type | M6 |
| Capacity (C20) | 50 Ah (c20) |
| Capacity (C5) | 42.5 Ah (c5) |

## Quick description

**MK Powered M50-12 SLD M 12V 50Ah** is a deep-cycle battery for wheelchairs and mobility scooters, optimised to be discharged and recharged daily down to 80 % DOD without losing range.

## 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
50 Ah C20

📏 Dimensions
198×166×170 mm

⚙️ Technology
AGM

⚖️ Weight
15,06 kg

🏷️ Model
MK AGM

## Description

## Mobility battery MK Powered M50-12 SLD M Mk AGM 50Ah 12V

12*V* Voltage
50*Ah* Capacity
15.06*kg* Weight

Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered M50-12 SLD M** from the **Mk AGM** range offers **50 Ah** of deep-cycle capacity with AGM technology. It measures 198 × 166 × 170 mm, the format sought by anyone replacing a 50 Ah battery in power wheelchairs and mobility scooters.
- Standard replacement format for wheelchairs and scooters.
- Thousands of useful cycles over its lifetime.
- Designed to be discharged and recharged daily without losing capacity.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.

### What the MK Powered M50-12 SLD M is for

The MK Powered M50-12 SLD M is designed for power wheelchairs, mobility scooters and light electric vehicles. Wheelchairs and scooters normally use two identical batteries in series: replace them together. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 15.06 kg and M6 terminals.

### Size, terminals and hold-down of the MK Powered M50-12 SLD M

It has external dimensions of 198 × 166 × 170 mm and weighs 15.06 kg. It uses M6 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

### What MK Powered does differently

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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### The MK Powered M50-12 SLD M: Mk AGM range and AGM technology

Within the MK Powered catalogue, the **Mk AGM** series groups the references designed for this use. The M50-12 SLD M is the 50 Ah model of that family, with the same performance as its siblings in other sizes.
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.

### How to make it last longer

Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together.

### Manufacturer's warranty

The MK Powered M50-12 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.

### Shipping, delivery and returns

Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 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 **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

## Frequently asked questions

### Is this battery AGM? What is it for?

Yes. The M50-12 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 M50-12 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.

### How many years does this battery last?

Expected lifespan of the MK Powered M50-12 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 measurements of the M50-12 SLD M model?

Dimensions (length × width × height) are 199×166×171 mm — also written as 199x166x171 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 M50-12 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.


## Compatible vehicles

This battery fits 24 vehicles. Most searched:

- [Drive Medical Design Odyssey GT, Prowler, Trident HD, Wildcat 450](https://baterias.com/gb/batteries-for-mobility-vehicles/drive-medical-design/odyssey-gt-prowler-trident-hd-wildcat-450)
- [Electric Mobility Rascal Ventura](https://baterias.com/gb/batteries-for-mobility-vehicles/electric-mobility/rascal-ventura)
- [Heartway USA HP6 Allure](https://baterias.com/gb/batteries-for-mobility-vehicles/heartway-usa/hp6-allure)
- [Heartway USA P3DXC Maxx C](https://baterias.com/gb/batteries-for-mobility-vehicles/heartway-usa/p3dxc-maxx-c)
- [Merits Health Products Luxury Midi 3-Wheel Electric Scooter (S137, S147)](https://baterias.com/gb/batteries-for-mobility-vehicles/merits-health-products/luxury-midi-3-wheel-electric-scooter-s137-s147)
- [Merits Health Products Maxi (S743)](https://baterias.com/gb/batteries-for-mobility-vehicles/merits-health-products/maxi-s743)
- [Amigo Mobility Escort](https://baterias.com/gb/batteries-for-mobility-vehicles/amigo-mobility/escort)
- [Quickie Freestyle Mini, Zippie Z-Bop](https://baterias.com/gb/batteries-for-mobility-vehicles/quickie/freestyle-mini-zippie-z-bop)
- [Heartway USA HP4 Rumba S](https://baterias.com/gb/batteries-for-mobility-vehicles/heartway-usa/hp4-rumba-s)
- [Electric Mobility Rascal P312 SL Turnabout, P312 SP Turnabout](https://baterias.com/gb/batteries-for-mobility-vehicles/electric-mobility/rascal-p312-sl-turnabout-p312-sp-turnabout)
- [Afikim Electric Vehicles Afiscooter C4, C3](https://baterias.com/gb/batteries-for-mobility-vehicles/afikim-electric-vehicles/afiscooter-c4-c3)
- [Quickie Q300 M Mini](https://baterias.com/gb/batteries-for-mobility-vehicles/quickie/q300-m-mini)
- [Electric Mobility Rascal Vantage](https://baterias.com/gb/batteries-for-mobility-vehicles/electric-mobility/rascal-vantage)
- [Whill Model M](https://baterias.com/gb/batteries-for-mobility-vehicles/whill/model-m)
- [Merits Health Products Silverado (S941A)](https://baterias.com/gb/batteries-for-mobility-vehicles/merits-health-products/silverado-s941a)

## Equivalent batteries

- [Q-battery BATTERY-12LCP-50](https://baterias.com/gb/battery-q-battery-12lcp-50-12v-50ah)

## 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 · 2026-10-25*