Mk powered E31 SLD G ST · Wheelchair battery 12V 97.6Ah 450A GEL
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | E31 SLD G ST |
| Voltage (V) | 12 |
| Capacity (C20) | 97.6Ah (c20) |
| Capacity (C5) | 80.5Ah (c5) |
| Technology | GEL |
| Length | 328.40 mm |
| Width | 171.20 mm |
| Height | 237.00 mm |
€399.90
VAT included
4,77/5★★★★★38 reviewsVerified purchases
- ★★★★★Hector Dominguez:
Os animo a llamar si necesitais asesoriamiento, a mi me funcionó
- ★★★★Alvaro Castillo:
Pedí la batería en Viernes y el Lunes ya la tenía aquí
- ★★★★★Sergio Diez:
Resultó facil instalar la batería en mi coche gracias a su asesoría. Web 100% recomendada
MK Powered E31 SLD G ST 12V 97Ah 450A 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
97 Ah
Cold cranking
450 A
Dimensions
328×171×237 mm
Technology
GEL
Weight
31,07 kg
Model
MK GEL
Mobility battery MK Powered E31 SLD G ST Mk GEL 97.6Ah 450A 12V
12VVoltage
97.6AhCapacity
450ACold cranking
31.07kgWeight
The MK Powered E31 SLD G ST with GEL technology delivers 97.6 Ah at 12 V with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. It measures 328 × 171 × 237 mm, the format sought by anyone replacing a 97.6 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.
- GEL technology: gelled electrolyte, fully sealed and maintenance-free.
What the MK Powered E31 SLD G ST is for
The MK Powered E31 SLD G ST 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 31.07 kg and ST terminals.
Size, terminals and hold-down of the MK Powered E31 SLD G ST
In terms of format, the MK Powered E31 SLD G ST measures 328 × 171 × 237 mm (length × width × height) and weighs 31.07 kg. It uses ST 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.
The MK Powered E31 SLD G ST: Mk GEL range and GEL technology
The Mk GEL is the MK Powered range the E31 SLD G ST 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.
GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM.
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.
Warranty and coverage
The MK Powered E31 SLD G ST 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.
How to make it last longer
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.
Delivery times 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.
BCOM-MK-E31 SLD G ST
Data sheet
- Brand
- MK
- Reference
- E31 SLD G ST
- Model
- MK GEL
- Voltage (V)
- 12
- Length
- 328.40 mm
- Width
- 171.20 mm
- Height
- 237.00 mm
- Weight
- 31.07 Kgs
- Technology
- GEL
- Terminal type
- ST
- Cold cranking amps (EN)
- 450
- Capacity (C20)
- 97.6Ah (c20)
- Capacity (C5)
- 80.5Ah (c5)
Specific References
- EAN13
- 3660766462657
- MPN
- E31 SLD G ST
4,77/5
Verified purchasesLatest verified reviews
★★★★★Hector Dominguez
12/06/2026Buen asesoramiento
Os animo a llamar si necesitais asesoriamiento, a mi me funcionó
★★★★★Alvaro Castillo
30/01/2026No tuve que esperar ni un día
Pedí la batería en Viernes y el Lunes ya la tenía aquí
★★★★★Sergio Diez
28/12/2025Llegó en plazo
Resultó facil instalar la batería en mi coche gracias a su asesoría. Web 100% recomendada
★★★★★Gabriel Velasco
26/12/2025Ayudan con la instalación
Ya me había encantado que me ayudaran con la elección de la MK E31 SLD G ST, pero es que encima me asesoraron al momento de instalarla. Todo de 10
Codes and references MK Powered E31 SLD G ST
| Brand | MK Powered |
|---|---|
| Manufacturer range | MK GEL |
| Manufacturer reference (MPN) | E31 SLD G ST |
| EAN-13 barcode | 3660766462657 |
| Dimensions (length × width × height) | 328 × 171 × 237 mm (328x171x237) |
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 E31 SLD G ST 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 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 (−) 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 E31 SLD G ST battery last?
Expected lifespan of the MK Powered E31 SLD G ST 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 E31 SLD G ST battery?
Dimensions (length × width × height) are 328×171×237 mm — also written as 328x171x237 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 E31 SLD G ST?
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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