# Wheelchair battery MK Powered 8G8D 12V 225Ah 1150A GEL

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> MK Powered 8G8D wheelchair battery 12V 225Ah 1150A GEL. Dimensions 519×278×253 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-8g8d-gel-12v-225ah
- **Language**: en-GB
- **Brand**: MK POWERED
- **Reference**: BCOM-MK-8G8D
- **MPN**: 8G8D
- **Price**: 940,60 €
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | MK |
| Reference | 8G8 D |
| Model | MK GEL |
| Voltage (V) | 12 V |
| Largo | 519.2 mm |
| Ancho | 278.6 mm |
| Alto | 253.5 mm |
| Peso | 71.21 kg |
| Tecnología | GEL |
| Terminal type | EAPT |
| Cold cranking amps (EN) | 1150 |
| Capacity (C20) | 225 Ah (c20) |
| Capacity (C5) | 188 Ah (c5) |

## Quick description

**MK Powered 8G8D 12V 225Ah 1150A** 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
225 Ah C20

🔋 Cold cranking
1150 A SAE

📏 Dimensions
519×278×253 mm

⚙️ Technology
GEL

⚖️ Weight
71,21 kg

🏷️ Model
MK GEL

## Description

## Mobility battery MK Powered 8G8D Mk GEL 225Ah 1,150A 12V

12*V* Voltage
225*Ah* Capacity
1,150*A* Cold cranking
71.21*kg* Weight

Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered 8G8D** from the **Mk GEL** range offers **225 Ah** of deep-cycle capacity with GEL technology. Its 519 × 278 × 253 mm make it the exact replacement for the 225 Ah battery fitted as standard to many power wheelchairs and mobility scooters.
- Approved for air and sea transport (VRLA).
- No maintenance, no water top-ups.
- Sealed AGM/GEL: safe indoors and in transport.
- GEL: excellent resistance to deep discharge and long cycle life.

### What the MK Powered 8G8D is for

The MK Powered 8G8D 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 71.21 kg and EAPT terminals.

### The MK Powered 8G8D: Mk GEL range and GEL technology

Within the MK Powered catalogue, the **Mk GEL** series groups the references designed for this use. The 8G8D is the 225 Ah model of that family, with the same performance as its siblings in other sizes.
In a GEL battery the electrolyte is gelled with silica: it is fully sealed, cannot spill and tolerates deep discharge very well. It is the preferred technology in electric mobility, marine service and heavy-cycling applications.

### Dimensions, polarity and mounting

The MK Powered 8G8D is made in the 519 × 278 × 253 mm format and weighs 71.21 kg. It uses EAPT 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.

### 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. All the MK Powered batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### Usage and maintenance tips

GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. 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 8G8D 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

Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.

## Frequently asked questions

### Is the 8G8D model a gel battery? Where is it used?

Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years.

### How is the MK Powered 8G8D battery installed in the vehicle?

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 this page. 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 8G8D is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. 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 size is this battery?

Dimensions (length × width × height) are 519×279×254 mm — also written as 519x279x254 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 interchangeable batteries are there for this one?

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.


## Reviews

- **Average rating**: 4.57 / 5 (9 reviews)

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

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

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*baterias.com — Automotive batteries · 2026-10-04*