# Wheelchair battery MK Powered ES4-6SA 6V 4Ah AGM ![Wheelchair battery MK Powered ES4-6SA 6V 4Ah AGM](https://baterias.com/246-home_default/battery-mk-es4-6sa-6v-4ah.jpg) > MK Powered ES4-6SA wheelchair battery 6V 4Ah AGM. Dimensions 70Γ—47Γ—105 mm. Deep-cycle and sealed, for daily wheelchair and mobility scooter use. **Category:** [Power Wheelchair Batteries](https://baterias.com/gb/batteries-for-electric-wheelchairs) β†’ [MK POWERED](https://baterias.com/gb/mk-powered) - **Canonical URL**: https://baterias.com/gb/battery-mk-es4-6sa-6v-4ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-ES4-6SA - **MPN**: ES4-6SA - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | ES4-6 SA | | Model | MK AGM | | Voltage (V) | 6 V | | Largo | 70.1 mm | | Ancho | 47 mm | | Alto | 105.9 mm | | Peso | 0.74 kg | | TecnologΓ­a | AGM | | Capacity (C20) | 4 Ah (c20) | | Capacity (C5) | 3.4 Ah (c5) | ## Quick description **MK Powered ES4-6SA 6V 4Ah** 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 πŸ”Œ Voltage 6 V ⚑ Capacity 4 Ah C20 πŸ“ Dimensions 70Γ—47Γ—105 mm βš™οΈ Technology AGM βš–οΈ Weight 0,74 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered ES4-6SA Mk AGM 4Ah 6V 6*V* Voltage 4*Ah* Capacity 0.74*kg* Weight The **6 V**, **4 Ah** **MK Powered ES4-6SA** from the **Mk AGM** range with AGM technology is the standard replacement for power wheelchairs, mobility scooters and light electric vehicles. It replaces the original battery without adaptation in power wheelchairs and mobility scooters with a 70 Γ— 47 Γ— 105 mm format: same 4 Ah capacity. - Thousands of useful cycles over its lifetime. - Standard replacement format for wheelchairs and scooters. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Designed to be discharged and recharged daily without losing capacity. ### What the MK Powered ES4-6SA is for The MK Powered ES4-6SA 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 0.74 kg. ### Size, terminals and hold-down of the MK Powered ES4-6SA It has external dimensions of 70 Γ— 47 Γ— 105 mm and weighs 0.74 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### The MK Powered ES4-6SA: Mk AGM range and AGM technology The **Mk AGM** is the MK Powered range the ES4-6SA 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. ### MK Powered: the maker behind the ES4-6SA 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. ### Manufacturer's warranty The MK Powered ES4-6SA 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. ### 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. ### Delivery times and returns 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 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 ES4-6SA an AGM battery and what are the benefits of AGM? Yes. The ES4-6SA 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 ES4-6SA 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 our blog. 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). 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 ES4-6SA battery last? Expected lifespan of the MK Powered ES4-6SA 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 ES4-6SA battery? Dimensions (length Γ— width Γ— height) are 70Γ—47Γ—106 mm β€” also written as 70x47x106 mm β€” 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 ES4-6SA 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 β€” 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” automotive battery specialists since 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-21*