# Wheelchair battery MK Powered M55-12 SLD M 12V 55Ah AGM ![Wheelchair battery MK Powered M55-12 SLD M 12V 55Ah AGM](https://baterias.com/290-home_default/battery-mk-m55-12-sld-m-12v-55ah.jpg) > MK Powered M55-12 SLD M wheelchair battery 12V 55Ah AGM. Dimensions 226×135×214 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-m55-12-sld-m-12v-55ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-M55-12 SLD M - **MPN**: M55-12 SLD M - **Price**: 199,10 € (VAT incl., Spain) - **Last updated**: 2026-08-30 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | M55-12 SLD M | | Model | MK AGM | | Voltage (V) | 12 V | | Largo | 226 mm | | Ancho | 135 mm | | Alto | 214 mm | | Tecnología | AGM | | Terminal type | M6 | | Capacity (C20) | 55 Ah (c20) | ## Quick description **MK Powered M55-12 SLD M 12V 55Ah** 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 55 Ah C20 📏 Dimensions 226×135×214 mm ⚙️ Technology AGM ⚖️ Weight 17 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered M55-12 SLD M Mk AGM 55Ah 12V 12*V* Voltage 55*Ah* Capacity 17*kg* Weight The **MK Powered M55-12 SLD M** with AGM technology delivers **55 Ah** at **12 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Its 226 × 135 × 214 mm make it the exact replacement for the 55 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. - AGM: faster recharging and better cycle resistance than a conventional battery. ### What the MK Powered M55-12 SLD M is for With 55 Ah, the MK Powered M55-12 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 17 kg and M6 terminals. ### Will it fit your current battery tray? The MK Powered M55-12 SLD M is made in the 226 × 135 × 214 mm format and weighs 17 kg. It uses M6 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters. ### The MK Powered M55-12 SLD M: Mk AGM range and AGM technology The **Mk AGM** is the MK Powered range the M55-12 SLD M belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### 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. ### Manufacturer's warranty The MK Powered M55-12 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. ### Usage and maintenance tips Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. ### 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 the MK Powered M55-12 SLD M an AGM battery and what are the benefits of AGM? Yes. The M55-12 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. ### What are the dimensions of the MK Powered M55-12 SLD M battery? Dimensions (length × width × height) are 226×135×214 mm — also written as 226x135x214 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. ## Equivalent batteries - [FULLRIVER HC55](https://baterias.com/gb/battery-fullriver-hc55-12v-55ah-620-cca) - [KRONOBAT ES55-12](https://baterias.com/gb/best-price-battery-12v-55ah-agm-es55-12) - [Q-battery BATTERY-12LCP-56](https://baterias.com/gb/battery-q-battery-12lcp-56-12v-56ah) ## 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 --- *baterias.com — Automotive batteries · 2026-10-29*