Mk powered 8G27 · Wheelchair battery 12V 88Ah 505A GEL
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | 8G27 |
| Voltage (V) | 12V |
| Capacity (C5) | 72Ah (c5) |
| Technology | GEL |
| Terminal type | DT |
| EAN | 3660766462640 |
€425.20
VAT included
4,70/5★★★★★9 reviewsVerified purchases
- ★★★★★Victor Vega:
Gracias por el asesoramiento
- ★★★★★Emilio Diaz:
Me alegra que cumplen con los tiempos de envío
- ★★★★Hugo Rodriguez:
Gracias a vosotros pude instalar la batería en mi coche
MK Powered 8G27 12V 88Ah 505A 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
88 Ah
Cold cranking
505 A
Dimensions
325×166×241 mm
Technology
GEL
Weight
28,12 kg
Model
MK GEL
Mobility battery MK Powered 8G27 72Ah 505A 12V
12VVoltage
72AhCapacity
505ACold cranking
28.12kgWeight
The MK Powered 8G27 with GEL technology delivers 72 Ah at 12 V with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Measuring 326 × 167 × 241 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 72 Ah battery of this format.
- GEL: excellent resistance to deep discharge and long cycle life.
- Sealed AGM/GEL: safe indoors and in transport.
- No maintenance, no water top-ups.
- Approved for air and sea transport (VRLA).
What the MK Powered 8G27 is for
The MK Powered 8G27 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 28.12 kg and DT terminals.
Technology inside the MK Powered 8G27
MK Powered builds the 8G27 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
A GEL battery is the choice when cycle resistance and safety matter most: no gases, no liquid and thousands of partial discharges in its lifetime.
Dimensions, polarity and mounting
It has external dimensions of 326 × 167 × 241 mm and weighs 28.12 kg. It uses DT terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
What MK Powered does differently
MK Battery (MK Powered) is the US specialist in AGM and GEL batteries for mobility: power wheelchairs, scooters and medical equipment rely on its batteries for safety and cycle life. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.
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. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together.
Manufacturer's warranty
The MK Powered 8G27 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.
Delivery times and returns
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
BCOM-MK-8G27
Data sheet
- Voltage (V)
- 12V
- Technology
- GEL
- Terminal type
- DT
- Capacity (C5)
- 72Ah (c5)
Specific References
- EAN13
- 3660766462640
- MPN
- 8G27
4,70/5
Verified purchasesLatest verified reviews
★★★★★Victor Vega
10/07/2026Buen asesoramiento
Gracias por el asesoramiento
★★★★★Emilio Diaz
08/02/2026Recibí la batería en 1 día
Me alegra que cumplen con los tiempos de envío
★★★★★Hugo Rodriguez
04/01/2026Buena atención
Gracias a vosotros pude instalar la batería en mi coche
★★★★★Manuel Lozano
03/01/2026Atención telefónica muy cercana
Agradezco que me asesoraran de cómo instalar la batería que compré
Codes and references MK Powered 8G27
| Brand | MK Powered |
|---|---|
| Manufacturer reference (MPN) | 8G27 |
| EAN-13 barcode | 3660766462640 |
| Dimensions (length × width × height) | 326 × 167 × 241 mm (326x167x241) |
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 GEL? What is the typical use?
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 8G27 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.
What is the service life of the 8G27 model?
Expected lifespan of the MK Powered 8G27 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 8G27 model?
Dimensions (length × width × height) are 326×167×241 mm — also written as 326x167x241 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 8G27?
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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