# Kronobat ES9-12 · Electric wheelchair battery 12V 9Ah

![Kronobat ES9-12 · Electric wheelchair battery 12V 9Ah](https://bateriasonline.es/2118-home_default/kronobat-es9-12.jpg)

> Kronobat ES9-12: 9 Ah electric wheelchair battery, 151×65×102 mm, AGM. Equivalent to MK Battery ES9-12 and MK Battery ES9-12FR. Ask for a no-obligation quote.

**Category:** [Electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries) → [Kronobat](https://bateriasonline.es/en/kronobat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/kronobat-es9-12
- **Language**: en
- **Brand**: Kronobat
- **Reference**: BOL-KRONOBAT-ES9-12
- **MPN**: ES9-12
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Kronobat |
| Range | AGM DEEP CYCLE |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 9 Ah |
| Length | 151 mm |
| Width | 65 mm |
| Height | 102 mm |
| Weight | 2.69 kg |
| Terminal type | F2 |

## Quick description

Kronobat ES9-12: electric wheelchair battery with 12 V and 9 Ah, measuring 151 × 65 × 102 mm.

## Description

## The Kronobat ES9-12 at a glance

The Kronobat ES9-12 is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. With 9 Ah per battery, the ES9-12 is designed for a full charge every night.
The ES9-12 belongs to the Kronobat AGM DEEP CYCLE range. [See all Kronobat batteries](https://bateriasonline.es/en/kronobat-batteries)

## Equivalents and alternatives to the Kronobat ES9-12

As the ES9-12 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.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| MK Battery ES9-12 | AGM | 9 Ah | 150.9 × 65 × 102.1 |
| MK Battery ES9-12FR | AGM | 9 Ah | 150.9 × 65 × 102.1 |
| MK Battery ES9-12TE | AGM | 9 Ah | 150.9 × 65 × 105.9 |
| MK Battery ES7-12 | AGM | 7.2 Ah | 150.9 × 65 × 102.1 |
| MK Battery ES7-12FR | AGM | 7.2 Ah | 150.9 × 65 × 102.1 |
| MK Battery ES7-12FR T2 | AGM | 7.2 Ah | 150.9 × 65 × 102.1 |

## Kronobat ES9-12 vs ES7-12, ES10-12S and ES12-12: which one to choose?

What sets the ES9-12 apart from its neighbours in the Kronobat range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Kronobat ES9-12 (this one) | 9 Ah | 151 × 65 × 102 | 2.69 kg |
| Kronobat ES7-12 | 7 Ah | 151 × 65 × 102 | 2.39 kg |
| Kronobat ES10-12S | 10 Ah | 151 × 65 × 114 | 3.28 kg |
| Kronobat ES12-12 | 12 Ah | 151 × 99 × 100 | 4.01 kg |

- Kronobat ES7-12: 2 Ah less, the same dimensions.
- Kronobat ES10-12S: 1 Ah more, a different height (114 mm instead of 102 mm). It only fits if there is room for 114 mm of height.
- Kronobat ES12-12: 3 Ah more, a different case (151 × 99 × 100 mm).

## Inside the ES9-12: AGM technology

The ES9-12 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## What to look at before buying the ES9-12

- Measure the space: the ES9-12 takes up 151 × 65 × 102 mm.
- With 9 Ah, the ES9-12 replaces an original battery of that capacity or slightly less.

## Kronobat ES9-12 codes and part numbers

The ES9-12 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | ES9-12 |
|---|---|
| Terminal type | F2 |
| Not to be confused with | Kronobat ES1.9-12 (2.3 Ah), Kronobat ES2.9-12 (2.9 Ah), Kronobat ES3-12 (3 Ah) |

## Frequently asked questions about the Kronobat ES9-12

### Kronobat ES9-12 or ES7-12?

Compared with the ES9-12, the Kronobat ES7-12 has 2 Ah less. With 9 Ah, the ES9-12 runs longer between charges than the ES7-12 (7 Ah). Both measure 151 × 65 × 102 mm, so they fit the same tray.

### Kronobat ES9-12 or ES10-12S: what changes?

Mainly the height: the ES9-12 is 102 mm tall and the Kronobat ES10-12S 114 mm, with the same length and width and 10 Ah against 9 Ah. Before choosing between the ES9-12 and the ES10-12S, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Kronobat ES9-12 weigh?

The ES9-12 weighs 2.69 kg. For reference, the Kronobat ES7-12 (7 Ah) weighs 2.39 kg.

### Which battery is equivalent to the Kronobat ES9-12?

Only other AGM batteries with its dimensions and polarity: MK Battery ES9-12, MK Battery ES9-12FR and MK Battery ES9-12TE. Neither an EFB nor a conventional battery replaces the ES9-12.

### How much range does the Kronobat ES9-12 give in an electric wheelchair?

It depends on weight, terrain and the chair. As a guide, with 9 Ah per battery an average chair covers several kilometres a day; range drops with hills and cold batteries.

## More batteries to compare with the ES9-12

- [More electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full Kronobat catalogue](https://bateriasonline.es/en/kronobat-batteries)
- [MK Battery ES9-12](https://bateriasonline.es/en/mk-battery-es9-12) · 9 Ah, 150.9×65×102.1 mm
- [MK Battery ES9-12FR](https://bateriasonline.es/en/mk-battery-es9-12fr) · 9 Ah, 150.9×65×102.1 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*