# Wheelchair battery Deka 9C11 6V 250Ah ![Wheelchair battery Deka 9C11 6V 250Ah](https://baterias.com/1032-home_default/battery-deka-9c11-6v-250ah.jpg) > Deka 9C11 wheelchair battery 6V 250Ah. Lead-acid range. Dimensions 297Γ—178Γ—284 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†’ [DEKA](https://baterias.com/gb/deka) - **Canonical URL**: https://baterias.com/gb/battery-deka-9c11-6v-250ah - **Language**: en-GB - **Brand**: DEKA - **Reference**: BCOM-DEKA-9C11 - **MPN**: 9C11 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | DEKA | | Reference | 9C11 | | Model | DEKA Lead-acid | | Voltage (V) | 6 V | | Largo | 297.9 mm | | Ancho | 178.3 mm | | Alto | 284.5 mm | | Peso | 33.11 kg | | TecnologΓ­a | Lead-acid | | Capacity (C20) | 250 Ah (c20) | ## Quick description **Deka 9C11 6V 250Ah** 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 6 V ⚑ Capacity 250 Ah C20 πŸ“ Dimensions 297Γ—178Γ—284 mm βš™οΈ Technology Lead-acid βš–οΈ Weight 33,11 kg 🏷️ Model DEKA PLOMO/ACIDO ## Description ## Mobility battery Deka 9C11 250Ah 6V 6*V* Voltage 250*Ah* Capacity 33.11*kg* Weight The **Deka 9C11** with conventional lead-acid technology delivers **250 Ah** at **6 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Measuring 297 Γ— 178 Γ— 284 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 250 Ah battery of this format. - No maintenance, no water top-ups. - Approved for air and sea transport (VRLA). - Good balance of capacity, cranking power and price. - Sealed AGM/GEL: safe indoors and in transport. ### Size, terminals and hold-down of the Deka 9C11 The Deka 9C11 is made in the 297 Γ— 178 Γ— 284 mm format and weighs 33.11 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### What the Deka 9C11 is for With 250 Ah, the Deka 9C11 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 33.11 kg. ### Technology inside the Deka 9C11 The 9C11 is one of the Deka references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue. In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use. ### Deka: the maker behind the 9C11 Deka batteries are known for their robust construction and consistent quality in automotive, marine, leisure and industrial use. All the Deka batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Warranty and coverage The Deka 9C11 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. ### Care and maintenance Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. On batteries with filler caps, check the electrolyte level and top up only with distilled water. ### When you get it and how to return it Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### 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 (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. ### What is the service life of the 9C11 model? Expected lifespan of the Deka 9C11 is 4 to 6 years in regular device use without 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 Deka 9C11 battery? Dimensions (length Γ— width Γ— height) are 298Γ—178Γ—285 mm β€” also written as 298x178x285 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. ### What are the equivalents of the 9C11 model? 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 (40 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· 2026-10-01*