# Wheelchair battery MK Powered ES3-12 12V 3Ah AGM ![Wheelchair battery MK Powered ES3-12 12V 3Ah AGM](https://baterias.com/239-home_default/battery-mk-es3-12-agm-12v-3ah.jpg) > MK Powered ES3-12 wheelchair battery 12V 3Ah AGM. Dimensions 134×67×65 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-es3-12-agm-12v-3ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-ES3-12 - **MPN**: ES3-12 - **Price**: 35,60 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | ES3-12 | | Model | MK AGM | | Voltage (V) | 12 V | | Largo | 134.1 mm | | Ancho | 67.1 mm | | Alto | 65.5 mm | | Peso | 1.3 kg | | Tecnología | AGM | | Terminal type | F1 | | Capacity (C20) | 3 Ah (c20) | | Capacity (C5) | 2.55 Ah (c5) | ## Quick description **MK Powered ES3-12 12V 3Ah** 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 3 Ah C20 📏 Dimensions 134×67×65 mm ⚙️ Technology AGM ⚖️ Weight 1,3 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered ES3-12 Mk AGM 3Ah 12V 12*V* Voltage 3*Ah* Capacity 1.30*kg* Weight Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered ES3-12** from the **Mk AGM** range offers **3 Ah** of deep-cycle capacity with AGM technology. Its 134 × 67 × 65 mm make it the exact replacement for the 3 Ah battery fitted as standard to many power wheelchairs and mobility scooters. - Sealed AGM/GEL: safe indoors and in transport. - AGM: faster recharging and better cycle resistance than a conventional battery. - Approved for air and sea transport (VRLA). - No maintenance, no water top-ups. ### What the MK Powered ES3-12 is for The MK Powered ES3-12 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 1.30 kg and F1 terminals. ### Size, terminals and hold-down of the MK Powered ES3-12 The MK Powered ES3-12 is made in the 134 × 67 × 65 mm format and weighs 1.30 kg. It uses F1 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 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. We guarantee that every MK Powered arrives new, charged and with the manufacturer's full warranty. ### The MK Powered ES3-12: Mk AGM range and AGM technology The ES3-12 is part of the MK Powered **Mk AGM** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. 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. ### Care and maintenance Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. ### Official warranty The MK Powered ES3-12 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 Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### Is the MK Powered ES3-12 an AGM battery and what are the benefits of AGM? Yes. The ES3-12 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 ES3-12 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 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. ### What is the service life of the ES3-12 model? Expected lifespan of the MK Powered ES3-12 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 ES3-12 model? Dimensions (length × width × height) are 134×67×66 mm — also written as 134x67x66 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. ### What are the equivalents of the ES3-12 model? 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**: 4.74 / 5 (22 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 --- *baterias.com — Automotive batteries · 2026-09-28*