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Deka 8GU1 · Wheelchair battery 12V 31.6Ah GEL

Specifications

BrandDEKA
Part number8GU1
Voltage (V)12
Capacity (C20)31.6Ah (c20)
Capacity (C10)30.5Ah (c10)
Capacity (C5)26.8Ah (c5)
TechnologyGEL
Length195.80 mm
Width131.60 mm
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Deka 8GU1 12V 31Ah 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 wearhandles deep discharges without losing capacity
  • Sealed AGM/GELno maintenance, no risk of spills
  • Thousands of useful cyclesover its full lifetime
Voltage
12 V
Capacity
31 Ah C20
Dimensions
195×131×183 mm
Technology
GEL
Weight
10,66 kg
Model
DEKA GEL
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Mobility battery Deka 8GU1 31.6Ah 12V

12VVoltage
31.6AhCapacity
10.66kgWeight

The Deka 8GU1 with GEL technology delivers 31.6 Ah at 12 V with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. It replaces the original battery without adaptation in power wheelchairs and mobility scooters with a 195 × 131 × 183 mm format: same 31.6 Ah capacity.

  • Thousands of useful cycles over its lifetime.
  • Standard replacement format for wheelchairs and scooters.
  • GEL technology: gelled electrolyte, fully sealed and maintenance-free.
  • Designed to be discharged and recharged daily without losing capacity.

Dimensions, polarity and mounting

In terms of format, the Deka 8GU1 measures 195 × 131 × 183 mm (length × width × height) and weighs 10.66 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

What the Deka 8GU1 is for

The Deka 8GU1 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 10.66 kg.

Technology inside the Deka 8GU1

The 8GU1 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 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.

Deka: the maker behind the 8GU1

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.

Manufacturer's warranty

The Deka 8GU1 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.

Usage and maintenance tips

GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity.

Shipping, delivery and returns

Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 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 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

  • Reference
    BCOM-DEKA-8GU1

Data sheet

  • Brand
    DEKA
  • Reference
    8GU1
  • Model
    DEKA GEL
  • Voltage (V)
    12
  • Length
    195.80 mm
  • Width
    131.60 mm
  • Height
    183.40 mm
  • Weight
    10.66 Kgs
  • Technology
    GEL
  • Capacity (C20)
    31.6Ah (c20)
  • Capacity (C10)
    30.5Ah (c10)
  • Capacity (C5)
    26.8Ah (c5)

Specific References

  • UPC
    083996009448
  • MPN
    8GU1

Recommended accessories — complement the Deka 8GU1 with a charger or tester

Frequently asked questions

Is the 8GU1 model a gel battery? Where is it used?

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 is the Deka 8GU1 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 our blog. 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 Deka 8GU1 battery last?

Expected lifespan of the Deka 8GU1 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 measurements of the 8GU1 model?

Dimensions (length × width × height) are 196×132×183 mm — also written as 196x132x183 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 Deka 8GU1?

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.


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