Mk powered ES3-12 · Wheelchair battery 12V 3Ah AGM
Specifications
| Brand | MK POWERED |
|---|---|
| Part number | ES3-12 |
| Voltage (V) | 12 |
| Capacity (C20) | 3Ah (c20) |
| Capacity (C5) | 2.55Ah (c5) |
| Technology | AGM |
| Length | 134.10 mm |
| Width | 67.10 mm |
| Height | 65.50 mm |
€35.60
VAT included
4,74/5★★★★★22 reviewsVerified purchases
- ★★★★★Oscar Ramos:
Gracias por el asesoramiento
- ★★★★★Jose Manuel Medina:
Supe cual batería necesitaba mi coche gracias a su asesoría
- ★★★★★Raul Fuentes:
Resuelven tus dudas y te ayudan con la instalación
MK Powered ES3-12 12V 3Ah 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
3 Ah
Dimensions
134×67×65 mm
Technology
AGM
Weight
1,3 kg
Model
MK AGM
Mobility battery MK Powered ES3-12 Mk AGM 3Ah 12V
12VVoltage
3AhCapacity
1.30kgWeight
Designed for power wheelchairs, mobility scooters and light electric vehicles, the MK Powered ES3-12 from the Mk AGM range offers 3 Ah of deep-cycle capacity with AGM technology. Its 134 × 67 × 65 mm make it the exact replacement for the 3 Ah battery fitted as standard to many power wheelchairs and mobility scooters.
- Sealed AGM/GEL: safe indoors and in transport.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Approved for air and sea transport (VRLA).
- No maintenance, no water top-ups.
What the MK Powered ES3-12 is for
The MK Powered ES3-12 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 1.30 kg and F1 terminals.
Size, terminals and hold-down of the MK Powered ES3-12
The MK Powered ES3-12 is made in the 134 × 67 × 65 mm format and weighs 1.30 kg. It uses F1 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 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. We guarantee that every MK Powered arrives new, charged and with the manufacturer's full warranty.
The MK Powered ES3-12: Mk AGM range and AGM technology
The ES3-12 is part of the MK Powered Mk AGM range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
Care and maintenance
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together.
Official warranty
The MK Powered ES3-12 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
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
BCOM-MK-ES3-12
Data sheet
- Brand
- MK
- Reference
- ES3-12
- Model
- MK AGM
- Voltage (V)
- 12
- Length
- 134.10 mm
- Width
- 67.10 mm
- Height
- 65.50 mm
- Weight
- 1.3 Kgs
- Technology
- AGM
- Terminal type
- F1
- Capacity (C20)
- 3Ah (c20)
- Capacity (C5)
- 2.55Ah (c5)
Specific References
- MPN
- ES3-12
4,74/5
Verified purchasesLatest verified reviews
★★★★★Oscar Ramos
27/07/2026Buen asesoramiento
Gracias por el asesoramiento
★★★★★Jose Manuel Medina
08/01/2026Gracias
Supe cual batería necesitaba mi coche gracias a su asesoría
★★★★★Raul Fuentes
07/01/2026Te indican cómo hacer la instalación
Resuelven tus dudas y te ayudan con la instalación
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 ES3-12 an AGM battery and what are the benefits of AGM?
Yes. The ES3-12 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 fit the ES3-12 model in my device?
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 ES3-12 model?
Expected lifespan of the MK Powered ES3-12 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 measurements of the ES3-12 model?
Dimensions (length × width × height) are 134×67×66 mm — also written as 134x67x66 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.
What are the equivalents of the ES3-12 model?
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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