# Wheelchair battery MK Powered 8A30 HEI 12V 105Ah AGM ![Wheelchair battery MK Powered 8A30 HEI 12V 105Ah AGM](https://baterias.com/183-home_default/battery-mk-8a30-hei-12v-105ah.jpg) > MK Powered 8A30 HEI wheelchair battery 12V 105Ah AGM. Dimensions 328Γ—171Γ—236 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-8a30-hei-12v-105ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-8A30 HEI - **MPN**: 8A30 HEI - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | 8A30 HEI | | Model | MK AGM | | Voltage (V) | 12 V | | Largo | 328.4 mm | | Ancho | 171.2 mm | | Alto | 236.5 mm | | Peso | 30.62 kg | | TecnologΓ­a | AGM | | Capacity (C20) | 105 Ah (c20) | | Capacity (C10) | 95 Ah (c10) | | Capacity (C5) | 86 Ah (c5) | ## Quick description **MK Powered 8A30 HEI 12V 105Ah** 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 12 V ⚑ Capacity 105 Ah C20 πŸ“ Dimensions 328Γ—171Γ—236 mm βš™οΈ Technology AGM βš–οΈ Weight 30,62 kg 🏷️ Model MK AGM ## Description ## Mobility battery MK Powered 8A30 HEI Mk AGM 105Ah 12V 12*V* Voltage 105*Ah* Capacity 30.62*kg* Weight The **MK Powered 8A30 HEI** with AGM technology delivers **105 Ah** at **12 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Measuring 328 Γ— 171 Γ— 236 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 105 Ah battery of this format. - AGM: faster recharging and better cycle resistance than a conventional battery. - Sealed AGM/GEL: safe indoors and in transport. - No maintenance, no water top-ups. - Approved for air and sea transport (VRLA). ### What the MK Powered 8A30 HEI is for The MK Powered 8A30 HEI 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 30.62 kg. ### The MK Powered 8A30 HEI: Mk AGM range and AGM technology The **Mk AGM** is the MK Powered range the 8A30 HEI 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. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### Dimensions, polarity and mounting In terms of format, the MK Powered 8A30 HEI measures 328 Γ— 171 Γ— 236 mm (length Γ— width Γ— height) and weighs 30.62 kg. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### 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. ### 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. ### Official warranty The MK Powered 8A30 HEI 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. ### Delivery times and returns 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 8A30 HEI model AGM? What does this technology offer? Yes. The 8A30 HEI 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 8A30 HEI 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 (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 8A30 HEI battery last? Expected lifespan of the MK Powered 8A30 HEI 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 8A30 HEI battery? Dimensions (length Γ— width Γ— height) are 328Γ—171Γ—237 mm β€” also written as 328x171x237 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 8A30 HEI? 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 (41 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· 2026-09-28*