# Wheelchair battery MK Powered E31 SLD G ST 12V 97.6Ah 450A GEL ![Wheelchair battery MK Powered E31 SLD G ST 12V 97.6Ah 450A GEL](https://baterias.com/207-home_default/battery-mk-e31-sld-g-st-gel-12v-97ah.jpg) > MK Powered E31 SLD G ST wheelchair battery 12V 97.6Ah 450A GEL. Dimensions 328×171×237 mm. Deep-cycle and sealed, for daily wheelchair and mobility scooter use. **Category:** [Power Wheelchair Batteries](https://baterias.com/gb/batteries-for-electric-wheelchairs) → [MK POWERED](https://baterias.com/gb/mk-powered) - **Canonical URL**: https://baterias.com/gb/battery-mk-e31-sld-g-st-gel-12v-97ah - **Language**: en-GB - **Brand**: MK POWERED - **Reference**: BCOM-MK-E31 SLD G ST - **EAN**: 3660766462657 - **MPN**: E31 SLD G ST - **Price**: 399,90 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MK | | Reference | E31 SLD G ST | | Model | MK GEL | | Voltage (V) | 12 V | | Largo | 328.4 mm | | Ancho | 171.2 mm | | Alto | 237 mm | | Peso | 31.07 kg | | Tecnología | GEL | | Terminal type | ST | | Cold cranking amps (EN) | 450 | | Capacity (C20) | 97.6 Ah (c20) | | Capacity (C5) | 80.5 Ah (c5) | ## Quick description **MK Powered E31 SLD G ST 12V 97Ah 450A** 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 97 Ah C20 🔋 Cold cranking 450 A SAE 📏 Dimensions 328×171×237 mm ⚙️ Technology GEL ⚖️ Weight 31,07 kg 🏷️ Model MK GEL ## Description ## Mobility battery MK Powered E31 SLD G ST Mk GEL 97.6Ah 450A 12V 12*V* Voltage 97.6*Ah* Capacity 450*A* Cold cranking 31.07*kg* Weight The **MK Powered E31 SLD G ST** with GEL technology delivers **97.6 Ah** at **12 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. It measures 328 × 171 × 237 mm, the format sought by anyone replacing a 97.6 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. ### What the MK Powered E31 SLD G ST is for The MK Powered E31 SLD G ST 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 31.07 kg and ST terminals. ### Size, terminals and hold-down of the MK Powered E31 SLD G ST In terms of format, the MK Powered E31 SLD G ST measures 328 × 171 × 237 mm (length × width × height) and weighs 31.07 kg. It uses ST terminals, the system that anchors and connects it in the vehicle. 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. ### The MK Powered E31 SLD G ST: Mk GEL range and GEL technology The **Mk GEL** is the MK Powered range the E31 SLD G ST 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. GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM. ### Why choose MK Powered batteries 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. ### Warranty and coverage The MK Powered E31 SLD G ST 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 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. ### 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 MK Powered E31 SLD G ST 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 — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years. ### How do I change this battery step by step? 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. ### How long does the MK Powered E31 SLD G ST battery last? Expected lifespan of the MK Powered E31 SLD G ST 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 E31 SLD G ST battery? Dimensions (length × width × height) are 328×171×237 mm — also written as 328x171x237 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. ### Which batteries are equivalent to the MK Powered E31 SLD G ST? 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**: 4.77 / 5 (38 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 · 2026-10-04*