# Wheelchair battery MK Powered ES4.5-4 4V 4.5Ah AGM ![Wheelchair battery MK Powered ES4.5-4 4V 4.5Ah AGM](https://baterias.com/247-home_default/battery-mk-es4_5-4-4v-45ah.jpg) > MK Powered ES4.5-4 wheelchair battery 4V 4.5Ah AGM. Dimensions 48Γ—52Γ—100 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_5-4-4v-45ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-ES4.5-4 - **MPN**: ES4.5-4 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | ES4.5-4 | | Model | MK AGM | | Voltage (V) | 4 V | | Largo | 48 mm | | Ancho | 52.1 mm | | Alto | 100.1 mm | | Peso | 0.63 kg | | TecnologΓ­a | AGM | | Capacity (C20) | 4.5 Ah (c20) | | Capacity (C5) | 3.825 Ah (c5) | ## Quick description **MK Powered ES4.5-4 4V 4Ah** 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 πŸ”Œ Voltage 4 V ⚑ Capacity 4 Ah C20 πŸ“ Dimensions 48Γ—52Γ—100 mm βš™οΈ Technology AGM βš–οΈ Weight 0,63 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered ES4.5-4 Mk AGM 4.5Ah 4V 4*V* Voltage 4.5*Ah* Capacity 0.63*kg* Weight The **MK Powered ES4.5-4** with AGM technology delivers **4.5 Ah** at **4 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Measuring 48 Γ— 52 Γ— 100 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 4.5 Ah battery of this format. - No maintenance, no water top-ups. - Approved for air and sea transport (VRLA). - AGM: faster recharging and better cycle resistance than a conventional battery. - Sealed AGM/GEL: safe indoors and in transport. ### What the MK Powered ES4.5-4 is for The MK Powered ES4.5-4 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 0.63 kg. ### The MK Powered ES4.5-4: Mk AGM range and AGM technology The ES4.5-4 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. 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. ### Dimensions, polarity and mounting In terms of format, the MK Powered ES4.5-4 measures 48 Γ— 52 Γ— 100 mm (length Γ— width Γ— height) and weighs 0.63 kg. 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. ### MK Powered: the maker behind the ES4.5-4 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Care and maintenance Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. ### Warranty and coverage The MK Powered ES4.5-4 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 ES4.5-4 an AGM battery and what are the benefits of AGM? Yes. The ES4.5-4 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 ES4.5-4 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 (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 ES4.5-4 battery last? Expected lifespan of the MK Powered ES4.5-4 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 ES4.5-4 battery? Dimensions (length Γ— width Γ— height) are 48Γ—52Γ—100 mm β€” also written as 48x52x100 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. ### Which batteries are equivalent to the MK Powered ES4.5-4? 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. ## Reviews - **Average rating**: 4.74 / 5 (45 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-02*