# Q-Battery 12LS-55 · UPS battery 12V 55Ah

![Q-Battery 12LS-55 · UPS battery 12V 55Ah](https://bateriasonline.es/3734-home_default/q-battery-12ls-55.jpg)

> Q-Battery 12LS-55: 55 Ah UPS battery, 229×138×210 mm, AGM. Equivalent to Long WXL12205WN and Long WPL55-12N.

**Category:** [UPS batteries](https://bateriasonline.es/en/ups-batteries) → [Q-Battery](https://bateriasonline.es/en/q-battery-batteries)

- **Canonical URL**: https://bateriasonline.es/en/q-battery-12ls-55
- **Language**: en
- **Brand**: Q-Battery
- **Reference**: BOL-QBATTERY-12LS-55
- **MPN**: 12LS-55
- **Price**: 226,09 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Q-Battery |
| Range | AGM STANDARD |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 55 Ah |
| Length | 229 mm |
| Width | 138 mm |
| Height | 210 mm |
| Weight | 18 kg |
| Terminal type | F11 (M6) |

## Quick description

The Q-Battery 12LS-55 is an UPS battery with 12 V and 55 Ah, measuring 229 × 138 × 210 mm.

## Description

## The Q-Battery 12LS-55 at a glance

The Q-Battery 12LS-55 is a VRLA AGM battery for UPS and uninterruptible power systems: it stays charged for years waiting for an outage and delivers the energy instantly when it comes. Before ordering the 12LS-55, check the terminal type and terminal orientation in your UPS.
The 12LS-55 belongs to the Q-Battery AGM STANDARD range. [More Q-Battery batteries](https://bateriasonline.es/en/q-battery-batteries)

## Equivalents and alternatives to the Q-Battery 12LS-55

Other AGM batteries that fit the 12LS-55's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long WXL12205WN | AGM | 55 Ah | 226 × 135 × 214 |
| Long WPL55-12N | AGM | 55 Ah | 226 × 135 × 214 |

## Q-Battery 12LS-55 vs 12LS-45 and 12LS-38

How the 12LS-55 compares with Q-Battery batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Q-Battery 12LS-55 (this one) | 55 Ah | 229 × 138 × 210 | 18 kg |
| Q-Battery 12LS-45 | 45 Ah | 197 × 165 × 170 | 14.5 kg |
| Q-Battery 12LS-38 | 38 Ah | 197 × 165 × 170 | 13.2 kg |

- Q-Battery 12LS-45: 10 Ah less, a different case (197 × 165 × 170 mm).
- Q-Battery 12LS-38: 17 Ah less, a different case (197 × 165 × 170 mm).

## Inside the 12LS-55: AGM technology

The 12LS-55 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.

## Before ordering the 12LS-55, check this

- Measure the space: the 12LS-55 takes up 229 × 138 × 210 mm.
- Your current battery should say about 55 Ah; a little more is also fine.

## Part numbers and codes for the Q-Battery 12LS-55

The 12LS-55 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | 12LS-55 |
|---|---|
| Terminal type | F11 (M6) |
| Not to be confused with | Q-Battery 12LS-4.5 (4.5 Ah), Q-Battery 12LS-45 (45 Ah), Q-Battery 12LS-65 (65 Ah) |

## Frequently asked questions about the Q-Battery 12LS-55

### 12LS-55 or 12LS-45: which one suits me?

Compared with the 12LS-55, the Q-Battery 12LS-45 has 10 Ah less. With 55 Ah, the 12LS-55 runs longer between charges than the 12LS-45 (45 Ah). Mind the space: the 12LS-45 measures 197 × 165 × 170 mm.

### How much does the Q-Battery 12LS-55 weigh?

18 kg, with 55 Ah of capacity. For reference, the Q-Battery 12LS-45 (45 Ah) weighs 14.5 kg.

### Which battery is equivalent to the Q-Battery 12LS-55?

Only other AGM batteries with its dimensions and polarity: Long WXL12205WN and Long WPL55-12N. Neither an EFB nor a conventional battery replaces the 12LS-55.

## Keep comparing: alternatives to the 12LS-55

- [More uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [More Q-Battery models](https://bateriasonline.es/en/q-battery-batteries)
- [Fulbat FP12-60](https://bateriasonline.es/en/fulbat-fp12-60) · 60 Ah, 229×138×211 mm

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