# Wheelchair battery MK Powered E27 SLD G 12V 88Ah GEL ![Wheelchair battery MK Powered E27 SLD G 12V 88Ah GEL](https://baterias.com/205-home_default/battery-mk-e27-sld-g-12v-88ah.jpg) > MK Powered E27 SLD G wheelchair battery 12V 88Ah GEL. Dimensions 325Γ—166Γ—237 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-e27-sld-g-12v-88ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-E27 SLD G - **MPN**: E27 SLD G - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | E27 SLD G | | Model | MK GEL | | Voltage (V) | 12 V | | Largo | 325.9 mm | | Ancho | 166.6 mm | | Alto | 237 mm | | Peso | 28.12 kg | | TecnologΓ­a | GEL | | Capacity (C20) | 88 Ah (c20) | | Capacity (C5) | 72 Ah (c5) | ## Quick description **MK Powered E27 SLD G 12V 88Ah** 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 88 Ah C20 πŸ“ Dimensions 325Γ—166Γ—237 mm βš™οΈ Technology GEL βš–οΈ Weight 28,12 kg 🏷️ Model MK GEL ## Description ## Mobility battery MK Powered E27 SLD G Mk GEL 88Ah 12V 12*V* Voltage 88*Ah* Capacity 28.12*kg* Weight Designed for power wheelchairs, mobility scooters and light electric vehicles, the **MK Powered E27 SLD G** from the **Mk GEL** range offers **88 Ah** of deep-cycle capacity with GEL technology. It measures 325 Γ— 166 Γ— 237 mm, the format sought by anyone replacing a 88 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. - GEL technology: gelled electrolyte, fully sealed and maintenance-free. ### Will it fit your current battery tray? The MK Powered E27 SLD G is made in the 325 Γ— 166 Γ— 237 mm format and weighs 28.12 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### What the MK Powered E27 SLD G is for With 88 Ah, the MK Powered E27 SLD G offers the daily range that power wheelchairs, mobility scooters and light electric vehicles need, with a sealed construction that is safe indoors. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 28.12 kg. ### The MK Powered E27 SLD G: Mk GEL range and GEL technology The E27 SLD G is part of the MK Powered **Mk GEL** 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 a GEL battery the electrolyte is gelled with silica: it is fully sealed, cannot spill and tolerates deep discharge very well. It is the preferred technology in electric mobility, marine service and heavy-cycling applications. ### Why choose MK Powered batteries 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. All the MK Powered batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Official warranty The MK Powered E27 SLD G 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. ### How to make it last longer GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. ### Shipping, delivery 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 MK Powered E27 SLD G a GEL battery? What is GEL used for? Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger β€” max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years. ### How is the MK Powered E27 SLD G 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 many years does this battery last? Expected lifespan of the MK Powered E27 SLD G is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. 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 E27 SLD G battery? Dimensions (length Γ— width Γ— height) are 326Γ—167Γ—237 mm β€” also written as 326x167x237 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 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 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**: 4.73 / 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· 2026-09-28*