# Wheelchair battery MK Powered M40-12 SLD G 12V 40Ah 225A GEL

![Wheelchair battery MK Powered M40-12 SLD G 12V 40Ah 225A GEL](https://baterias.com/286-home_default/battery-mk-m40-12-sld-g-gel-12v-40ah.jpg)

> MK Powered M40-12 SLD G wheelchair battery 12V 40Ah 225A GEL. Dimensions 197×168×174 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-m40-12-sld-g-gel-12v-40ah
- **Language**: en-GB
- **Brand**: MK POWERED
- **Reference**: BCOM-MK-M40-12 SLD G
- **EAN**: 3660766462596
- **MPN**: M40-12 SLD G
- **Price**: 180,80 € (VAT incl., Spain)
- **Last updated**: 2026-10-28
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK |
| Reference | M40-12 SLD G |
| Model | MK GEL |
| Voltage (V) | 12 V |
| Largo | 197.1 mm |
| Ancho | 168.1 mm |
| Alto | 174.8 mm |
| Peso | 14.29 kg |
| Tecnología | GEL |
| Terminal type | C (INSERT) |
| Cold cranking amps (EN) | 225 |
| Capacity (C20) | 40 Ah (c20) |
| Capacity (C5) | 34 Ah (c5) |

## Quick description

**MK Powered M40-12 SLD G 12V 40Ah 225A** 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
40 Ah C20

🔋 Cold cranking
225 A SAE

📏 Dimensions
197×168×174 mm

⚙️ Technology
GEL

⚖️ Weight
14,29 kg

🏷️ Model
MK GEL

## Description

## Mobility battery MK Powered M40-12 SLD G Mk GEL 40Ah 225A 12V

12*V* Voltage
40*Ah* Capacity
225*A* Cold cranking
14.29*kg* Weight

Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered M40-12 SLD G** from the **Mk GEL** range offers **40 Ah** of deep-cycle capacity with GEL technology. It replaces the original battery without adaptation in power wheelchairs and mobility scooters with a 197 × 168 × 174 mm format: same 40 Ah capacity.
- Thousands of useful cycles over its lifetime.
- Standard replacement format for wheelchairs and scooters.
- GEL technology: gelled electrolyte, fully sealed and maintenance-free.
- Designed to be discharged and recharged daily without losing capacity.

### What the MK Powered M40-12 SLD G is for

The MK Powered M40-12 SLD G is the usual replacement in power wheelchairs, mobility scooters and light electric vehicles. Recharge after each use and avoid leaving it discharged for days. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 14.29 kg and C (INSERT) terminals.

### Dimensions, polarity and mounting

The MK Powered M40-12 SLD G is made in the 197 × 168 × 174 mm format and weighs 14.29 kg. It uses C (INSERT) terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

### Why choose MK Powered batteries

MK Battery (MK Powered) is the US specialist in AGM and GEL batteries for mobility: power wheelchairs, scooters and medical equipment rely on its batteries for safety and cycle life. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### The MK Powered M40-12 SLD G: Mk GEL range and GEL technology

The M40-12 SLD G is part of the MK Powered **Mk GEL** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM.

### Care and maintenance

Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte.

### Manufacturer's warranty

The MK Powered M40-12 SLD G 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.

### When you get it and how to return it

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 the M40-12 SLD G model a gel battery? Where is it used?

Yes: in the M40-12 SLD G the electrolyte is gelled. It is a sealed lead-acid GEL battery. Its maximum charge voltage is lower than an AGM's, so a GEL-specific smart charger is needed. With very good deep-discharge tolerance, it is ideal for cyclic use: solar, motorhomes, electric wheelchairs and motorcycles.

### What size is this battery?

Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 197×168×175 mm in length × width × height, with the terminals included in the height.


## Compatible vehicles

This battery fits 28 vehicles. Most searched:

- [Pride Celebrity, Celebrity XL, Cyclone, Laser](https://baterias.com/gb/batteries-for-mobility-vehicles/pride/celebrity-celebrity-xl-cyclone-laser)
- [Movingpeople.net Alex](https://baterias.com/gb/batteries-for-mobility-vehicles/movingpeople-net/alex)
- [Quickie Aspire M10/M11, Freestyle M11](https://baterias.com/gb/batteries-for-mobility-vehicles/quickie/aspire-m10m11-freestyle-m11)
- [Karma Medical Products KS-838](https://baterias.com/gb/batteries-for-mobility-vehicles/karma-medical-products/ks-838)
- [Amigo Mobility B-6](https://baterias.com/gb/batteries-for-mobility-vehicles/amigo-mobility/b-6)
- [Karma Medical Products KS-848](https://baterias.com/gb/batteries-for-mobility-vehicles/karma-medical-products/ks-848)
- [Pride Hurricane](https://baterias.com/gb/batteries-for-mobility-vehicles/pride/hurricane)
- [Rovi ROVI X3](https://baterias.com/gb/batteries-for-mobility-vehicles/rovi/rovi-x3)
- [Karma Medical Products KP40, KP45.3](https://baterias.com/gb/batteries-for-mobility-vehicles/karma-medical-products/kp40-kp453)
- [Afikim Electric Vehicles Afiscooter C4, C3](https://baterias.com/gb/batteries-for-mobility-vehicles/afikim-electric-vehicles/afiscooter-c4-c3)
- [Amigo Mobility GT Transport](https://baterias.com/gb/batteries-for-mobility-vehicles/amigo-mobility/gt-transport)
- [Merits Health Products Pioneer 3 (S132, SP43), Pioneer 4 (S142, SP44)](https://baterias.com/gb/batteries-for-mobility-vehicles/merits-health-products/pioneer-3-s132-sp43-pioneer-4-s142-sp44)
- [Permobil Koala](https://baterias.com/gb/batteries-for-mobility-vehicles/permobil/koala)
- [Levo LCM 36 amp](https://baterias.com/gb/batteries-for-mobility-vehicles/levo/lcm-36-amp)
- [Movingpeople.net Beatle](https://baterias.com/gb/batteries-for-mobility-vehicles/movingpeople-net/beatle)

## Reviews

- **Average rating**: 5 / 5 (1 reviews)

Average rating 5/5 from 1 verified-purchase reviews (ks_recovery, unfiltered). The 3 most recent:

- ★★★★★ **Sascha P.** (2026-10-02): *tudo conforme esperado* — sem dificuldades montar e andar

## 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 · 2026-11-08*