Mk powered M45-12 SLD M · Wheelchair battery 12V 45Ah AGM
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | M45-12 SLD M |
| Voltage (V) | 12 |
| Capacity (C20) | 45Ah (c20) |
| Capacity (C5) | 38.25Ah (c5) |
| Technology | AGM |
| Length | 198.90 mm |
| Width | 166.10 mm |
| Height | 170.90 mm |
€149.50
VAT included
4,75/5★★★★★30 reviewsVerified purchases
- ★★★★★Jose Carmona:
Uff te saca de un buen apuro, tu pedido llega en menos de 24 horas comprobado
- ★★★★★Gabriel Diaz:
Puedes llamar, la asesoría es gratis y te ayudan a elegir batería y con la instalación
- ★★★★★Jose Francisco Lorenzo:
No sé de baterías pero llamé y me indicarón la que me mi coche necesitaba
MK Powered M45-12 SLD M 12V 45Ah 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
45 Ah
Dimensions
198×166×170 mm
Technology
AGM
Weight
14,47 kg
Model
MK AGM
Mobility battery MK Powered M45-12 SLD M Mk AGM 45Ah 12V
12VVoltage
45AhCapacity
14.47kgWeight
Designed for power wheelchairs, mobility scooters and light electric vehicles, the MK Powered M45-12 SLD M from the Mk AGM range offers 45 Ah of deep-cycle capacity with AGM technology. It measures 198 × 166 × 170 mm, the format sought by anyone replacing a 45 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 M45-12 SLD M is for
The MK Powered M45-12 SLD M 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 14.47 kg and F4 terminals.
Dimensions, polarity and mounting
It has external dimensions of 198 × 166 × 170 mm and weighs 14.47 kg. It uses F4 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 MK Powered does differently
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.
The MK Powered M45-12 SLD M: Mk AGM range and AGM technology
Within the MK Powered catalogue, the Mk AGM series groups the references designed for this use. The M45-12 SLD M is the 45 Ah model of that family, with the same performance as its siblings in other sizes.
AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery.
Usage and maintenance tips
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity.
Manufacturer's warranty
The MK Powered M45-12 SLD M 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.
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-M45-12 SLD M
Data sheet
- Brand
- MK
- Reference
- M45-12 SLD M
- Model
- MK AGM
- Voltage (V)
- 12
- Length
- 198.90 mm
- Width
- 166.10 mm
- Height
- 170.90 mm
- Weight
- 14.47 Kgs
- Technology
- AGM
- Terminal type
- F4
- Capacity (C20)
- 45Ah (c20)
- Capacity (C5)
- 38.25Ah (c5)
Specific References
- MPN
- M45-12 SLD M
4,75/5
Verified purchasesLatest verified reviews
★★★★★Jose Carmona
01/02/2026Me llegó al día siguiente
Uff te saca de un buen apuro, tu pedido llega en menos de 24 horas comprobado
★★★★★Gabriel Diaz
28/01/2026Gran asesoramiento
Puedes llamar, la asesoría es gratis y te ayudan a elegir batería y con la instalación
★★★★★Jose Francisco Lorenzo
27/12/2025Gracias
No sé de baterías pero llamé y me indicarón la que me mi coche necesitaba
Comparison: MK Powered M45-12 SLD M vs equivalents
The MK Powered M45-12 SLD M is interchangeable with these equivalent references: DCG40-12 (Fullriver), RA12-40B (Ritar).
| Product | Specifications | Technology | Price |
|---|---|---|---|
MK Powered
M45-12 SLD M
This battery
|
12V 45Ah | AGM | €149.50 |
Fullriver
DCG40-12
|
12V 40Ah | AGM | €175.90 |
Ritar
RA12-40B
|
12V 42Ah | AGM | €142.10 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
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 M45-12 SLD M an AGM battery and what are the benefits of AGM?
Yes. The M45-12 SLD M 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 M45-12 SLD M 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 M45-12 SLD M battery last?
Expected lifespan of the MK Powered M45-12 SLD M 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 dimensions of the MK Powered M45-12 SLD M battery?
Dimensions (length × width × height) are 199×166×171 mm — also written as 199x166x171 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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