# Wheelchair battery MK Powered M45-12 SLD M 12V 45Ah AGM ![Wheelchair battery MK Powered M45-12 SLD M 12V 45Ah AGM](https://baterias.com/288-home_default/battery-mk-m45-12-sld-m-12v-45ah.jpg) > MK Powered M45-12 SLD M wheelchair battery 12V 45Ah 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-m45-12-sld-m-12v-45ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-M45-12 SLD M - **MPN**: M45-12 SLD M - **Price**: 149,50 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | M45-12 SLD M | | Model | MK AGM | | Voltage (V) | 12 V | | Largo | 198.9 mm | | Ancho | 166.1 mm | | Alto | 170.9 mm | | Peso | 14.47 kg | | Tecnología | AGM | | Terminal type | F4 | | Capacity (C20) | 45 Ah (c20) | | Capacity (C5) | 38.25 Ah (c5) | ## Quick description **MK Powered M45-12 SLD M 12V 45Ah** 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 45 Ah C20 📏 Dimensions 198×166×170 mm ⚙️ Technology AGM ⚖️ Weight 14,47 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered M45-12 SLD M Mk AGM 45Ah 12V 12*V* Voltage 45*Ah* Capacity 14.47*kg* Weight Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered M45-12 SLD M** from the **Mk AGM** range offers **45 Ah** of deep-cycle capacity with AGM technology. It measures 198 × 166 × 170 mm, the format sought by anyone replacing a 45 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 M45-12 SLD M is for The MK Powered M45-12 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 14.47 kg and F4 terminals. ### Dimensions, polarity and mounting It has external dimensions of 198 × 166 × 170 mm and weighs 14.47 kg. It uses F4 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. We guarantee that every MK Powered arrives new, charged and with the manufacturer's full warranty. ### The MK Powered M45-12 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 M45-12 SLD M is the 45 Ah model of that family, with the same performance as its siblings in other sizes. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### 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 M45-12 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. ### When you get it and how to return it 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 MK Powered M45-12 SLD M an AGM battery and what are the benefits of AGM? Yes. The M45-12 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 is the MK Powered M45-12 SLD M 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 long does the MK Powered M45-12 SLD M battery last? Expected lifespan of the MK Powered M45-12 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 M45-12 SLD M battery? 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 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. ## Equivalent batteries - [FULLRIVER DCG40-12](https://baterias.com/gb/battery-fullriver-dcg40-12-12v-40ah) - [RITAR RA12-40B](https://baterias.com/gb/battery-ritar-ra12-40b-12v-42ah) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-08*