Mk powered 8A31DT · Wheelchair battery 12V 105Ah AGM
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | 8A31DT |
| Voltage (V) | 12 |
| Capacity (C20) | 105Ah (c20) |
| Capacity (C10) | 95Ah (c10) |
| Capacity (C5) | 86Ah (c5) |
| Technology | AGM |
| Length | 328.40 mm |
| Width | 171.20 mm |
This product is priced on demand to offer you the best available price at all times.
Please contact us to request a quote and we will inform you about availability and the best price on the entire website, as well as the delivery time.
Thank you
4,75/5★★★★★40 reviewsVerified purchases
- ★★★★Hugo Hidalgo:
Gracias por el asesoramiento
- ★★★★★Alfonso Mendez:
Gracias a vosotros pude instalar la batería en mi coche
- ★★★★Adrian Santana:
Agradezco que me asesoraran de cómo instalar la batería que compré
MK Powered 8A31DT 12V 105Ah 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
105 Ah
Dimensions
328×171×238 mm
Technology
AGM
Weight
30,62 kg
Model
MK AGM
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Mobility battery MK Powered 8A31DT Mk AGM 105Ah 12V
12VVoltage
105AhCapacity
30.62kgWeight
Designed for power wheelchairs, mobility scooters and light electric vehicles, the MK Powered 8A31DT from the Mk AGM range offers 105 Ah of deep-cycle capacity with AGM technology. It measures 328 × 171 × 238 mm, the format sought by anyone replacing a 105 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.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
What the MK Powered 8A31DT is for
The MK Powered 8A31DT is designed for power wheelchairs, mobility scooters and light electric vehicles. Wheelchairs and scooters normally use two identical batteries in series: replace them together. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 30.62 kg.
Dimensions, polarity and mounting
The MK Powered 8A31DT is made in the 328 × 171 × 238 mm format and weighs 30.62 kg. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
The MK Powered 8A31DT: Mk AGM range and AGM technology
The Mk AGM is the MK Powered range the 8A31DT 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.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
MK Powered: the maker behind the 8A31DT
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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.
Warranty and coverage
The MK Powered 8A31DT 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.
When you get it and how to return it
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.
BCOM-MK-8A31DT
Data sheet
- Brand
- MK
- Reference
- 8A31DT
- Model
- MK AGM
- Voltage (V)
- 12
- Length
- 328.40 mm
- Width
- 171.20 mm
- Height
- 238.80 mm
- Weight
- 30.62 Kgs
- Technology
- AGM
- Capacity (C20)
- 105Ah (c20)
- Capacity (C10)
- 95Ah (c10)
- Capacity (C5)
- 86Ah (c5)
Specific References
- MPN
- 8A31DT
4,75/5
Verified purchasesLatest verified reviews
★★★★★Hugo Hidalgo
30/07/2026Buen asesoramiento
Gracias por el asesoramiento
★★★★★Alfonso Mendez
17/01/2026Encontré lo que buscaba
Gracias a vosotros pude instalar la batería en mi coche
★★★★★Adrian Santana
05/01/2026Pude instalarla gracias a su asesoramiento
Agradezco que me asesoraran de cómo instalar la batería que compré
★★★★★Felix Guerrero
01/01/2026Recibí al día siguiente
Me alegra que cumplen con los tiempos de envío
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 this battery AGM? What is it for?
Yes. The 8A31DT from MK Powered uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How is the MK Powered 8A31DT 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 8A31DT battery last?
Expected lifespan of the MK Powered 8A31DT is 5 to 8 years in mild-climate device use with 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 measurements of the 8A31DT model?
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 batteries are equivalent to the MK Powered 8A31DT?
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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