# Long LG45-12 · Electric wheelchair battery 12V 45Ah

![Long LG45-12 · Electric wheelchair battery 12V 45Ah](https://bateriasonline.es/876-home_default/long-lg45-12.jpg)

> Long LG45-12: 45 Ah electric wheelchair battery, 199×166×171 mm, positive terminal on the right, GEL. Equivalent to Long LG45-12N.

**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-lg45-12
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-LG45-12
- **MPN**: LG45-12
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | LG Series |
| Application | Electric wheelchairs |
| Technology | GEL |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Length | 199 mm |
| Width | 166 mm |
| Height | 171 mm |
| Weight | 15 kg |
| Polarity | Positive terminal on the right |

## Quick description

Long LG45-12: electric wheelchair battery with 12 V and 45 Ah, measuring 199 × 166 × 171 mm, with the positive terminal on the right.

## Description

## The Long LG45-12 at a glance

The Long LG45-12 is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The LG45-12 is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The LG45-12 belongs to the Long LG Series range. [The full range of Long batteries](https://bateriasonline.es/en/long-batteries)

## GEL technology in the LG45-12

The LG45-12 is a gel battery: the electrolyte is immobilised in silica gel. It requires a charger with a specific gel profile.

## Long LG45-12 vs LG40-12 and LG40-12N: differences

The real differences between the LG45-12 and the closest Long models:

| Model | Capacity | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|
| Long LG45-12 (this one) | 45 Ah | 199 × 166 × 171 | right | 15 kg |
| Long LG40-12 | 40 Ah | 199 × 166 × 171 | right | 13.3 kg |
| Long LG40-12N | 40 Ah | 199 × 166 × 171 | right | 13.3 kg |

- Long LG40-12: 5 Ah less, the same dimensions.
- Long LG40-12N: 5 Ah less, the same dimensions.

## Equivalents and alternatives to the Long LG45-12

Gel alternatives to the LG45-12, with the same size and polarity: a gel charger does not treat an AGM or a flooded battery the same way.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long LG45-12N | GEL | 45 Ah | 199 × 166 × 171 |

## Part numbers and codes for the Long LG45-12

The LG45-12 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | LG45-12 |
|---|---|
| Not to be confused with | Long LG40-12 (40 Ah), Long LG65-12 (65 Ah) |

## Check this before ordering the Long LG45-12

- With 45 Ah, the LG45-12 replaces an original battery of that capacity or slightly less.
- With the terminals facing you, the positive terminal of the LG45-12 is on the right.
- Length, width and height of the LG45-12: 199 × 166 × 171 mm.

## Frequently asked questions about the Long LG45-12

### LG45-12 or LG40-12: which one suits me?

Compared with the LG45-12, the Long LG40-12 has 5 Ah less. With 45 Ah, the LG45-12 runs longer between charges than the LG40-12 (40 Ah). Both measure 199 × 166 × 171 mm, so they fit the same tray.

### How much does the Long LG45-12 weigh?

15 kg, with 45 Ah of capacity. For reference, the Long LG40-12 (40 Ah) weighs 13.3 kg.

### Which battery is equivalent to the Long LG45-12?

For the LG45-12, other gel batteries with its size and polarity: Long LG45-12N.

### Which side is the positive terminal on the Long LG45-12?

On the LG45-12, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Which charger does the Long LG45-12 need?

A charger with a GEL mode not exceeding 14.1-14.4 V. Charging it with a conventional lead-acid profile damages it through overcharging.

## More batteries to compare with the LG45-12

- [Other electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [Full Long catalogue](https://bateriasonline.es/en/long-batteries)
- [Long LG45-12N](https://bateriasonline.es/en/long-lg45-12n) · 45 Ah, 199×166×171 mm

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