Mk powered M40-12 SLD M MK AGM · Wheelchair battery 45Ah
Wheelchair battery MK Powered M40-12 SLD M 12V 45Ah AGM images
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | M40-12 SLD M |
| Voltage (V) | 12 |
| Capacity (C20) | 45Ah (c20) |
| Capacity (C5) | 38.25Ah (c5) |
| Technology | AGM |
| Length | 198.10 mm |
| Width | 166.10 mm |
| Height | 170.90 mm |
MK Powered M40-12 SLD M 12V 45Ah 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
Where it fits: the Mk Powered M40-12 SLD M is one of our power wheelchair batteries and by capacity it sits among our 45Ah batteries.
The Mk Powered M40-12 SLD M in practice
M40-12 SLD M vs Mk Powered M50-12 SLD M
The Mk Powered M40-12 SLD M offers 45 Ah and 0 A cold cranking in a 198 × 166 × 171 mm case. The Mk Powered M50-12 SLD M, same brand and technology, goes up to 50 Ah and 0 A with 1 mm more length and costs €28.00 more. If the tray takes the size, extra capacity and cranking give winter margin; if not, this one is the fit.
Mobility battery MK Powered M40-12 SLD M Mk AGM 45Ah 12V
The 12 V, 45 Ah MK Powered M40-12 SLD M from the Mk AGM range with AGM technology is the standard replacement for power wheelchairs, mobility scooters and light electric vehicles. Its 198 × 166 × 170 mm make it the exact replacement for the 45 Ah battery fitted as standard to many power wheelchairs and mobility scooters.
- Approved for air and sea transport (VRLA).
- No maintenance, no water top-ups.
- Sealed AGM/GEL: safe indoors and in transport.
- AGM: faster recharging and better cycle resistance than a conventional battery.
What the MK Powered M40-12 SLD M is for
With 45 Ah, the MK Powered M40-12 SLD M 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 14.47 kg.
Will it fit your current battery tray?
In terms of format, the MK Powered M40-12 SLD M measures 198 × 166 × 170 mm (length × width × height) and weighs 14.47 kg. 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 M40-12 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 M40-12 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.
MK Powered: the maker behind the M40-12 SLD M
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. All the MK Powered batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Official warranty
The MK Powered M40-12 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.
Care and maintenance
Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity.
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.
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ReferenceBCOM-MK-M40-12 SLD M
Data sheet
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BrandMK
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ReferenceM40-12 SLD M
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ModelMK AGM
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Voltage (V)12
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Length198.10 mm
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Width166.10 mm
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Height170.90 mm
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Weight14.47 Kgs
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TechnologyAGM
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Capacity (C20)45Ah (c20)
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Capacity (C5)38.25Ah (c5)
Specific References
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EAN138404653009069
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MPNM40-12 SLD M
Codes and references MK Powered M40-12 SLD M
| Brand | MK Powered |
|---|---|
| Manufacturer range | MK AGM |
| Manufacturer part number (MPN) | M40-12 SLD M |
| Also known as | M4012SLDM · M40 12 SLD M |
| EAN-13 barcode | 8404653009069 |
| Dimensions (length × width × height) | 198 × 166 × 171 mm (198x166x171) |
MK Powered M40-12 SLD M: alternatives with the same dimensions
Batteries from our catalogue with the same dimensions, voltage and technology as the MK Powered M40-12 SLD M and a similar capacity, sorted by sales. They are not manufacturer-approved equivalents: check the polarity and capacity of your original battery.
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MK Powered
M40-12 SLD M
This battery
|
12V 45Ah | AGM | €126.90 | |||||||||||||||||||||
MK Powered
M50-12 SLD M
Same size |
12V 50Ah | AGM | €154.90 +€28.00 | |||||||||||||||||||||
| ||||||||||||||||||||||||
| M40-12 SLD M | M50-12 SLD M | |
|---|---|---|
| Capacity | 45 Ah | 50 Ah |
| Cold cranking (EN) | — | — |
| Technology | AGM | AGM |
| Dimensions (mm) | 198 × 166 × 171 | 199 × 166 × 171 |
| Positive terminal | — | — |
| Price | €126.90 | €154.90 |
MK Powered
M45-12 SLD M
Same size MK Powered M40-12 SLD M vs MK Powered M45-12 SLD M
Same size · +€22.60
Same case and same technology as the M40-12 SLD M: an alternative by size, not an official equivalent. Compared with the M40-12 SLD M it has the same Ah and cranking power. It costs €22.60 more. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
| M40-12 SLD M | M45-12 SLD M | |
|---|---|---|
| Capacity | 45 Ah | 45 Ah |
| Cold cranking (EN) | — | — |
| Technology | AGM | AGM |
| Dimensions (mm) | 198 × 166 × 171 | 199 × 166 × 171 |
| Positive terminal | — | — |
| Price | €126.90 | €149.50 |
Long
WP50-12NE
Same size MK Powered M40-12 SLD M vs Long WP50-12NE
Same size · −€26.10
Same case and same technology as the M40-12 SLD M: an alternative by size, not an official equivalent. Compared with the M40-12 SLD M it has 5 Ah more. It costs €26.10 less. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
| M40-12 SLD M | WP50-12NE | |
|---|---|---|
| Capacity | 45 Ah | 50 Ah |
| Cold cranking (EN) | — | — |
| Technology | AGM | AGM |
| Dimensions (mm) | 198 × 166 × 171 | 199 × 166 × 171 |
| Positive terminal | — | — |
| Price | €126.90 | €100.80 |
Long
WP50-12
Same size MK Powered M40-12 SLD M vs Long WP50-12
Same size · +€18.40
Same case and same technology as the M40-12 SLD M: an alternative by size, not an official equivalent. Compared with the M40-12 SLD M it has 5 Ah more. It costs €18.40 more. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
| M40-12 SLD M | WP50-12 | |
|---|---|---|
| Capacity | 45 Ah | 50 Ah |
| Cold cranking (EN) | — | — |
| Technology | AGM | AGM |
| Dimensions (mm) | 198 × 166 × 171 | 199 × 166 × 171 |
| Positive terminal | — | — |
| Price | €126.90 | €145.30 |
Long
WP50-12N
Same size MK Powered M40-12 SLD M vs Long WP50-12N
Same size · +€18.40
It has the same dimensions, voltage and technology as the M40-12 SLD M, although it is not a manufacturer-approved equivalent. Compared with the M40-12 SLD M it has 5 Ah more. It costs €18.40 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
| M40-12 SLD M | WP50-12N | |
|---|---|---|
| Capacity | 45 Ah | 50 Ah |
| Cold cranking (EN) | — | — |
| Technology | AGM | AGM |
| Dimensions (mm) | 198 × 166 × 171 | 199 × 166 × 171 |
| Positive terminal | — | — |
| Price | €126.90 | €145.30 |
Long
WP40-12
Same size 
Long
WP40-12N
Same size 
Long
WP40-12E
Same size Automatic selection by dimensions (±3 mm), voltage, technology and capacity (−10 % / +20 %). Official manufacturer warranty on every option.
Other 45Ah batteries: We stock 33 models of 45 Ah to compare by price, technology and cold cranking: see all 45Ah batteries. Same size (198 × 166 × 171 mm): batteries of 198 × 166 × 171 mm.
Recommended accessories
Frequently asked questions
Is the M40-12 SLD M model AGM? What does this technology offer?
Yes. The M40-12 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.
What are the measurements of the M40-12 SLD M model?
Dimensions (length × width × height) are 198×166×171 mm — also written as 198x166x171 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.
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