Mk powered 8G31DT · Wheelchair battery 12V 97.6Ah 450A GEL
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | 8G31DT |
| Voltage (V) | 12 |
| Capacity (C20) | 97.6Ah (c20) |
| Capacity (C10) | 90Ah (c10) |
| Capacity (C5) | 80.5Ah (c5) |
| Cold cranking amps (EN) | 450 |
| Technology | GEL |
| Length | 328.40 mm |
€425.80
VAT included
MK Powered 8G31DT 12V 97Ah 450A is a sealed AGM/GEL battery for daily mobility use: maintenance-free, no risk of spills, and thousands of useful cycles well beyond a starter battery.
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
97 Ah
Cold cranking
450 A
Dimensions
328×171×238 mm
Technology
GEL
Weight
31,07 kg
Model
MK GEL
Os animo a llamar si necesitais asesoriamiento, a mi me funcionó
Andres GimenezGracias a vosotros pude instalar la batería en mi coche
Carlos SanzMe alegra que cumplen con los tiempos de envío
Joaquin Hernandez
Reviews originally written in Spanish
Mobility battery MK Powered 8G31DT Mk GEL 97.6Ah 450A 12V
12VVoltage
97.6AhCapacity
450ACold cranking
31.07kgWeight
The 12 V, 97.6 Ah MK Powered 8G31DT from the Mk GEL range with GEL technology is the standard replacement for power wheelchairs, mobility scooters and light electric vehicles. It replaces the original battery without adaptation in power wheelchairs and mobility scooters with a 328 × 171 × 238 mm format: same 97.6 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.
Size, terminals and hold-down of the MK Powered 8G31DT
It has external dimensions of 328 × 171 × 238 mm and weighs 31.07 kg. It uses EAPT / ST terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
What the MK Powered 8G31DT is for
With 97.6 Ah, the MK Powered 8G31DT 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 31.07 kg and EAPT / ST terminals.
The MK Powered 8G31DT: Mk GEL range and GEL technology
Within the MK Powered catalogue, the Mk GEL series groups the references designed for this use. The 8G31DT is the 97.6 Ah model of that family, with the same performance as its siblings in other sizes.
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 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.
Manufacturer's warranty
The MK Powered 8G31DT 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
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.
Shipping, delivery and returns
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 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.
BCOM-MK-8G31DT
Data sheet
- Brand
- MK
- Reference
- 8G31DT
- Model
- MK GEL
- Voltage (V)
- 12
- Length
- 328.40 mm
- Width
- 171.20 mm
- Height
- 238.80 mm
- Weight
- 31.07 Kgs
- Technology
- GEL
- Terminal type
- EAPT / ST
- Cold cranking amps (EN)
- 450
- Capacity (C20)
- 97.6Ah (c20)
- Capacity (C10)
- 90Ah (c10)
- Capacity (C5)
- 80.5Ah (c5)
Specific References
- MPN
- 8G31DT
4,50/5
Latest reviews
Reviews originally written in Spanish
★★★★★Andres Gimenez
17/05/2026Me asesoraron
Os animo a llamar si necesitais asesoriamiento, a mi me funcionó
★★★★★Carlos Sanz
12/02/2026Rápido y correcto
Gracias a vosotros pude instalar la batería en mi coche
★★★★★Joaquin Hernandez
06/02/2026Llega al día siguiente
Me alegra que cumplen con los tiempos de envío
★★★★★Nicolas Vidal
25/12/2025Gracias por la ayuda
Ya me había encantado que me ayudaran con la elección de la MK 8G31DT, pero es que encima me asesoraron al momento de instalarla. Todo de 10
Recommended accessories
How to change the battery
Guide to replace a cyclic battery (12V 4-30Ah) for UPS, mobility scooter, alarm or backup device. Estimated time 10-15 minutes. Important: discharge residual voltage before handling.
Step 1. Power off and unplug the device
Unplug the device (UPS, scooter, alarm) and leave it off for at least 30 seconds to discharge residual capacitor voltage. Work on an insulating surface.
Step 2. Locate the battery compartment
Usually under the seat (mobility scooter/wheelchair), in the rear module of the UPS, or behind a side panel with screws. Check the device manual for unusual models.
Step 3. Disconnect the negative (−) first
With insulated gloves, remove the negative (−) cable first. Some UPS have protection fuses — note their position before removing.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Typical weight 1-15 kg depending on capacity. Many cyclic batteries are AGM/GEL — keep them upright. Do NOT invert the battery: even sealed, residue may exist.
Step 6. Fit the new battery
Same orientation and type (AGM, GEL or flooded). Polarity must match the device, not a chassis (this is not a car). Make sure terminals do not touch metal parts of the compartment.
Step 7. Connect the positive (+) first
On cyclic devices the order is reversed compared to cars: positive (+) first, negative (−) afterwards. Tighten without forcing — the plastic terminal housing of cyclic batteries damages easily.
Step 8. Initial charge before first use
Cyclic batteries ship at 60-80%. Before first use, connect the device charger for 8-12 hours (or use an AGM/GEL smart charger if available). This avoids short cycles and extends lifespan.
Frequently asked questions
Is the MK Powered 8G31DT 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 is the MK Powered 8G31DT 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 (−) 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 8G31DT battery last?
Expected lifespan of the MK Powered 8G31DT 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 8G31DT battery?
Dimensions (length × width × height) are 328×171×239 mm — also written as 328x171x239 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 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 — 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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