Mk powered ES12-12SA · Wheelchair battery 12V 12Ah AGM
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | ES12-12SA |
| Voltage (V) | 12 |
| Capacity (C20) | 12Ah (c20) |
| Capacity (C5) | 10.2Ah (c5) |
| Technology | AGM |
| Length | 150.90 mm |
| Width | 98.00 mm |
| Height | 98.00 mm |
€55.10
VAT included
4,79/5★★★★★32 reviewsVerified purchases
- ★★★★★Ricardo Sanchez:
Excelente asesoramiento
- ★★★★★Ricardo Cortes:
Resultó facil instalar la batería en mi coche gracias a su asesoría. Web 100% recomendada
- ★★★★★Hugo Cabrera:
Ya me había encantado que me ayudaran con la elección de la MK ES12-12SA, pero es que encima me asesoraron al momento de instalarla. Todo…
MK Powered ES12-12SA 12V 12Ah 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
12 Ah
Dimensions
150×98×98 mm
Technology
AGM
Weight
3,74 kg
Model
MK AGM
Mobility battery MK Powered ES12-12SA Mk AGM 12Ah 12V
12VVoltage
12AhCapacity
3.74kgWeight
Designed for power wheelchairs, mobility scooters and light electric vehicles, the MK Powered ES12-12SA from the Mk AGM range offers 12 Ah of deep-cycle capacity with AGM technology. Measuring 150 × 98 × 98 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 12 Ah battery of this format.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- 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 ES12-12SA is for
The MK Powered ES12-12SA 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 3.74 kg.
Will it fit your current battery tray?
In terms of format, the MK Powered ES12-12SA measures 150 × 98 × 98 mm (length × width × height) and weighs 3.74 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
MK Powered: the maker behind the ES12-12SA
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.
The MK Powered ES12-12SA: Mk AGM range and AGM technology
Within the MK Powered catalogue, the Mk AGM series groups the references designed for this use. The ES12-12SA is the 12 Ah model of that family, with the same performance as its siblings in other sizes.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.
Usage and maintenance tips
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.
Warranty and coverage
The MK Powered ES12-12SA 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.
Shipping, delivery 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-ES12-12SA
Data sheet
- Brand
- MK
- Reference
- ES12-12SA
- Model
- MK AGM
- Voltage (V)
- 12
- Length
- 150.90 mm
- Width
- 98.00 mm
- Height
- 98.00 mm
- Weight
- 3.74 Kgs
- Technology
- AGM
- Capacity (C20)
- 12Ah (c20)
- Capacity (C5)
- 10.2Ah (c5)
Specific References
- MPN
- ES12-12SA
4,79/5
Verified purchasesLatest verified reviews
★★★★★Ricardo Sanchez
06/07/2026Buen asesoramiento
Excelente asesoramiento
★★★★★Ricardo Cortes
03/02/2026No tardó nada
Resultó facil instalar la batería en mi coche gracias a su asesoría. Web 100% recomendada
★★★★★Hugo Cabrera
16/01/2026Me ayudaron paso a paso
Ya me había encantado que me ayudaran con la elección de la MK ES12-12SA, pero es que encima me asesoraron al momento de instalarla. Todo de 10
★★★★★Mateo Campos
26/12/2025En plazo
Pedí la batería en Viernes y el Lunes ya la tenía aquí
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 ES12-12SA model AGM? What does this technology offer?
Yes. The ES12-12SA 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 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 ES12-12SA battery last?
Expected lifespan of the MK Powered ES12-12SA 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 size is this battery?
Dimensions (length × width × height) are 151×98×98 mm — also written as 151x98x98 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 ES12-12SA?
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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