# Long WP18-12U · Electric wheelchair battery 12V 18Ah

![Long WP18-12U · Electric wheelchair battery 12V 18Ah](https://bateriasonline.es/788-home_default/long-wp18-12u.jpg)

> Long WP18-12U: 18 Ah electric wheelchair battery, 181×76×167 mm, AGM. Equivalent to Kronobat ES17-12 and MK Battery ES17-12. Ask for a no-obligation quote.

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

- **Canonical URL**: https://bateriasonline.es/en/long-wp18-12u
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-WP18-12U
- **MPN**: WP18-12U
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | WP Series |
| Application | Electric wheelchairs |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 18 Ah |
| Length | 181 mm |
| Width | 76 mm |
| Height | 167 mm |
| Weight | 6.3 kg |

## Quick description

The Long WP18-12U is an electric wheelchair battery with 12 V and 18 Ah, measuring 181 × 76 × 167 mm.

## Description

## Where the Long WP18-12U fits

The Long WP18-12U is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. With 18 Ah per battery, the WP18-12U is designed for a full charge every night.
The WP18-12U belongs to the Long WP Series range. [The full range of Long batteries](https://bateriasonline.es/en/long-batteries)

## What it means that the WP18-12U is AGM

The WP18-12U is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the WP18-12U can be fitted in the boot or under a seat with no risk of spills.

## Long WP18-12U vs WP20-12 and WP20-12I

Torn between the WP18-12U and another similar Long? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long WP18-12U (this one) | 18 Ah | 181 × 76 × 167 | 6.3 kg |
| Long WP20-12 | 20 Ah | 181 × 76 × 167 | 5.95 kg |
| Long WP20-12I | 20 Ah | 181 × 76 × 167 | 5.95 kg |

- Long WP20-12: 2 Ah more, the same dimensions.
- Long WP20-12I: 2 Ah more, the same dimensions.

## Equivalents and alternatives to the Long WP18-12U

As the WP18-12U 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) |
|---|---|---|---|
| Kronobat ES17-12 | AGM | 18 Ah | 181 × 76 × 167 |
| MK Battery ES17-12 | AGM | 18 Ah | 181.1 × 75.9 × 166.9 |
| MK Battery ES17-12S | AGM | 18 Ah | 181.1 × 75.9 × 166.9 |
| MK Battery M17-12 SLD M | AGM | 18 Ah | 181.1 × 75.9 × 166.9 |
| Q-Battery 12LCP-19 | AGM | 19 Ah | 181 × 77 × 167 |
| Kronobat ES20-12CFT | AGM | 20 Ah | 181 × 76 × 167 |

## What to look at before buying the WP18-12U

- With 18 Ah, the WP18-12U replaces an original battery of that capacity or slightly less.
- Measure the space: the WP18-12U takes up 181 × 76 × 167 mm.

## Frequently asked questions about the Long WP18-12U

### Long WP18-12U or WP20-12?

Compared with the WP18-12U, the Long WP20-12 has 2 Ah more. With 20 Ah, the WP20-12 runs longer between charges than the WP18-12U (18 Ah). Both measure 181 × 76 × 167 mm, so they fit the same tray.

### How much does the Long WP18-12U weigh?

The WP18-12U weighs 6.3 kg. For reference, the Long WP20-12 (20 Ah) weighs 5.95 kg.

### Which battery is equivalent to the Long WP18-12U?

Only other AGM batteries with its dimensions and polarity: Kronobat ES17-12, MK Battery ES17-12 and MK Battery ES17-12S. Neither an EFB nor a conventional battery replaces the WP18-12U.

### Which charger does the Long WP18-12U 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 WP18-12U

- [All electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full Long catalogue](https://bateriasonline.es/en/long-batteries)
- [Kronobat ES17-12](https://bateriasonline.es/en/kronobat-es17-12) · 18 Ah, 181×76×167 mm
- [MK Battery ES17-12](https://bateriasonline.es/en/mk-battery-es17-12) · 18 Ah, 181.1×75.9×166.9 mm

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