# MK batteries > Over 110 MK Battery products: AGM and GEL electric wheelchair batteries such as ES12-12 or ES22-12, plus MK chargers. Final price with VAT included. **Category:** [Beginning](https://bateriasonline.es/en/) → [Battery brands](https://bateriasonline.es/en/battery-brands) - **Canonical URL**: https://bateriasonline.es/en/mk-batteries - **Language**: en ## Description Sealed 6V and 12V MK Battery batteries for wheelchairs and mobility equipment; buy your replacement online. **Most searched models:** [MK Battery ES12-12](https://bateriasonline.es/en/mk-battery-es12-12), [MK Battery MU-1 SLD M](https://bateriasonline.es/en/mk-battery-mu-1-sld-m), [MK Battery MU-1 SLD A](https://bateriasonline.es/en/mk-battery-mu-1-sld-a), [MK Battery MU-1 SLD M-33](https://bateriasonline.es/en/mk-battery-mu-1-sld-m-33), [MK Battery MU-1 SLD M-2](https://bateriasonline.es/en/mk-battery-mu-1-sld-m-2), [MK Battery ES17-12](https://bateriasonline.es/en/mk-battery-es17-12), [MK Battery ES14-12](https://bateriasonline.es/en/mk-battery-es14-12), [MK Battery M50-12 SLD M](https://bateriasonline.es/en/mk-battery-m50-12-sld-m), [MK Battery ES26-12](https://bateriasonline.es/en/mk-battery-es26-12), [MK Battery M40-12 SLD M](https://bateriasonline.es/en/mk-battery-m40-12-sld-m), [MK Battery M45-12 SLD M](https://bateriasonline.es/en/mk-battery-m45-12-sld-m), [MK Battery ES22-12](https://bateriasonline.es/en/mk-battery-es22-12). MK Battery replacements for electric mobility: AGM and GEL blocks at 12 and 6 V, small formats from under 1 Ah and the brand's own chargers. Keep the model you have fitted to hand. With its capacity, size and connection type you can track down the MK equivalent here in a few steps. ## Pick your MK in four steps - **1. Identify the equipment:** a powered chair, a [mobility scooter](https://bateriasonline.es/en/mobility-scooter-batteries) or a small device such as an alarm. For chairs there is also the [electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries) section. - **2. Read the label:** voltage (12, 6 or 4 V) and capacity in Ah, usually quoted at a 20-hour discharge. - **3. Measure the space:** length, width and height, including the height of the terminals. - **4. Confirm the connection:** small formats usually carry faston tabs, larger ones a bolt or stud. ## AGM or GEL in your chair or scooter If your equipment came with AGM, stay with AGM; if it came with GEL, keep GEL. The charger is set for the original technology, and changing it without readjusting shortens the life of the pack. Under heavy use, with near-complete discharges every day, GEL tends to cope better with continuous cycling; AGM handles short bursts of effort, such as pulling away on a slope, more easily. ## Frequently asked questions ### Can I use my current charger with MK batteries? Yes, as long as voltage and technology match the batteries you are removing. If the charger is worn or lacks a mode for your chemistry, MK chargers are available in the shop. ### Are there MK batteries for alarms or emergency lights? Yes: the small 4, 6 and 12 V blocks are also listed under [batteries for devices and alarms](https://bateriasonline.es/en/alarm-emergency-light-device-batteries). ### How do I store the chair if it will sit for weeks? Leave it fully charged, disconnect the batteries if the equipment allows it and repeat the charge every few weeks. AGM self-discharges slowly, but it never stops completely. Learn more about the brand on the [MK Battery page](https://bateriasonline.es/en/mk-batteries). ## Products in this category | Product | Brand | Price | |---|---|---| | [MK Battery 8A8D · Electric wheelchair battery 12V 245Ah](https://bateriasonline.es/en/mk-battery-8a8d) | MK Battery | 1.132,49 € | | [MK Battery 8AU1H · Electric wheelchair battery 12V 32Ah](https://bateriasonline.es/en/mk-battery-8au1h) | MK Battery | 179,83 € | | [MK Battery 8G27 · Electric wheelchair battery 12V 88Ah](https://bateriasonline.es/en/mk-battery-8g27) | MK Battery | 416,70 € | | [MK Battery 8G31 · Electric wheelchair battery 12V 97.6Ah](https://bateriasonline.es/en/mk-battery-8g31) | MK Battery | 417,28 € | | [MK Battery 8G31DT · Electric wheelchair battery 12V 97.6Ah](https://bateriasonline.es/en/mk-battery-8g31dt) | MK Battery | 416,84 € | | [MK Battery 8G4D · Electric wheelchair battery 12V 183Ah](https://bateriasonline.es/en/mk-battery-8g4d) | MK Battery | 676,79 € | | [MK Battery 8G5SHP · Electric wheelchair battery 12V 115Ah](https://bateriasonline.es/en/mk-battery-8g5shp) | MK Battery | 523,81 € | | [MK Battery 8G8D · Electric wheelchair battery 12V 225Ah](https://bateriasonline.es/en/mk-battery-8g8d) | MK Battery | 921,79 € | | [MK Battery 8G8VGC · Electric wheelchair battery 8V 140Ah](https://bateriasonline.es/en/mk-battery-8g8vgc) | MK Battery | 446,19 € | | [MK Battery 8GGC2 · Electric wheelchair battery 6V 180Ah](https://bateriasonline.es/en/mk-battery-8ggc2) | MK Battery | 421,20 € | | [MK Battery 8GTE35 · Electric wheelchair battery 6V 196Ah](https://bateriasonline.es/en/mk-battery-8gte35) | MK Battery | 450,51 € | | [MK Battery 8GU1 · Electric wheelchair battery 12V 31.6Ah](https://bateriasonline.es/en/mk-battery-8gu1) | MK Battery | 225,01 € | | [MK Battery 8GU1H · Electric wheelchair battery 12V 31.6Ah](https://bateriasonline.es/en/mk-battery-8gu1h) | MK Battery | 125,34 € | | [MK Battery E31 SLD G · Electric wheelchair battery 12V 97.6Ah](https://bateriasonline.es/en/mk-battery-e31-sld-g) | MK Battery | 354,17 € | | [MK Battery E31 SLD G ST · Electric wheelchair battery 12V 97.6Ah](https://bateriasonline.es/en/mk-battery-e31-sld-g-st) | MK Battery | 391,90 € | --- *bateriasonline.es — Batteries and accessories · 2026-11-10*