MK Battery

MK Battery ES12-6 · Electric wheelchair battery 6V 12Ah

Reference: BOL-MK-ES12-6

The MK Battery ES12-6 is an electric wheelchair battery with 6 V and 12 Ah, measuring 150.9 × 50 × 99.1 mm.

The MK Battery ES12-6 at a glance

The MK Battery ES12-6 is made for powered wheelchairs. It is fitted as a 12 V pair and takes hundreds of daily cycles, something a starter battery could not handle.

The ES12-6 belongs to the MK Battery MK AGM range. More MK Battery batteries

What it means that the ES12-6 is AGM

Inside, the ES12-6 has glass fibre separators (AGM) that hold the electrolyte. The ES12-6 needs a charger with an AGM mode that does not exceed 14.7 V.

MK Battery ES12-6 vs ES8.2-6S and ES13-6: differences

Torn between the ES12-6 and another similar MK Battery? This is what changes:

ModelCapacityDimensions (mm)Weight
MK Battery ES12-6 (this one)12 Ah150.9 × 50 × 99.11.84 kg
MK Battery ES8.2-6S9 Ah98.6 × 55.9 × 118.11.7 kg
MK Battery ES13-613 Ah108 × 70.1 × 1402.24 kg
  • MK Battery ES8.2-6S: 3 Ah less, a different case (98.6 × 55.9 × 118.1 mm).
  • MK Battery ES13-6: 1 Ah more, a different case (108 × 70.1 × 140 mm).

Equivalents and alternatives to the MK Battery ES12-6

As the ES12-6 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

ModelTechnologyCapacityDimensions (mm)
MK Battery ES12-6 T2AGM12 Ah150.9 × 50 × 99.1
MK Battery ES12-6FR HRAGM12 Ah150.9 × 50 × 99.1

MK Battery ES12-6 codes and part numbers

This is how the MK Battery ES12-6 appears on the label and in parts catalogues:

Commercial referenceES12-6
Terminal typeF1 / F2
Not to be confused withMK Battery ES13-6 (13 Ah), MK Battery ES42-6 (42 Ah)

What to look at before buying the ES12-6

  • Capacity of the ES12-6: 12 Ah; the same as your current battery or slightly more is fine.
  • The ES12-6 needs 150.9 × 50 × 99.1 mm of space: measure it with the hold-down clamp in place.

Frequently asked questions about the MK Battery ES12-6

MK Battery ES12-6 or ES8.2-6S?

Compared with the ES12-6, the MK Battery ES8.2-6S has 3 Ah less. With 12 Ah, the ES12-6 runs longer between charges than the ES8.2-6S (9 Ah). Mind the space: the ES8.2-6S measures 98.6 × 55.9 × 118.1 mm.

How much does the MK Battery ES12-6 weigh?

The ES12-6 weighs 1.84 kg. For reference, the MK Battery ES8.2-6S (9 Ah) weighs 1.7 kg.

Which battery is equivalent to the MK Battery ES12-6?

Only other AGM batteries with its dimensions and polarity: MK Battery ES12-6 T2 and MK Battery ES12-6FR HR. Neither an EFB nor a conventional battery replaces the ES12-6.

Which charger does the MK Battery ES12-6 need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

More batteries to compare with the ES12-6

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