# Q-Battery 12LS-4.5 · UPS battery 12V 4.5Ah

![Q-Battery 12LS-4.5 · UPS battery 12V 4.5Ah](https://bateriasonline.es/3707-home_default/q-battery-12ls-4-5.jpg)

> Q-Battery 12LS-4.5: 4.5 Ah UPS battery, 90×70×107 mm, AGM. Equivalent to Fulbat FP12-4.5 and Long WP4.5-12.

**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-4-5
- **Language**: en
- **Brand**: Q-Battery
- **Reference**: BOL-QBATTERY-12LS-4.5
- **EAN**: 4250889610135
- **MPN**: 12LS-4.5
- **Price**: 25,77 € (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 | 4.5 Ah |
| Length | 90 mm |
| Width | 70 mm |
| Height | 107 mm |
| Weight | 1.4 kg |
| Terminal type | F1 (4,75 mm) |

## Quick description

The Q-Battery 12LS-4.5 is an UPS battery with 12 V and 4.5 Ah, measuring 90 × 70 × 107 mm.

## Description

## Where the Q-Battery 12LS-4.5 fits

The Q-Battery 12LS-4.5 replaces the original batteries in a UPS. The 12LS-4.5 spends most of its life on float charge, waiting for a power cut.
The 12LS-4.5 belongs to the Q-Battery AGM STANDARD range. [The full range of Q-Battery batteries](https://bateriasonline.es/en/q-battery-batteries)

## Equivalents and alternatives to the Q-Battery 12LS-4.5

Other AGM batteries that fit the 12LS-4.5's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Fulbat FP12-4.5 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Long WP4.5-12 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Ritar RT1245 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Long WP5-12 | AGM | 5 Ah | 90 × 70 × 107 |
| Long WP5-12SHR | AGM | 5 Ah | 90 × 70 × 107 |
| Long WPS4-12 | AGM | 4 Ah | 90 × 70 × 107 |

## Q-Battery 12LS-4.5 vs 12LS-3.4: differences

How the 12LS-4.5 compares with Q-Battery batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Q-Battery 12LS-4.5 (this one) | 4.5 Ah | 90 × 70 × 107 | 1.4 kg |
| Q-Battery 12LS-3.4 | 3.4 Ah | 134 × 67 × 60.5 | 1.35 kg |

- Q-Battery 12LS-3.4: 1.1 Ah less, a different case (134 × 67 × 60.5 mm).

## AGM technology in the 12LS-4.5

Inside, the 12LS-4.5 has glass fibre separators (AGM) that hold the electrolyte. The 12LS-4.5 needs a charger with an AGM mode that does not exceed 14.7 V.

## What to look at before buying the 12LS-4.5

- Measure the space: the 12LS-4.5 takes up 90 × 70 × 107 mm.
- Your current battery should say about 4.5 Ah; a little more is also fine.

## Part numbers and codes for the Q-Battery 12LS-4.5

This is how the Q-Battery 12LS-4.5 appears on the label and in parts catalogues:

| Commercial reference | 12LS-4.5 |
|---|---|
| EAN | 4250889610135 |
| Terminal type | F1 (4,75mm) |
| Not to be confused with | Q-Battery 12LS-55 (55 Ah), Q-Battery 12LS-65 (65 Ah), Q-Battery 12LS-75 (78 Ah) |

## Frequently asked questions about the Q-Battery 12LS-4.5

### 12LS-4.5 or 12LS-3.4: which one suits me?

Compared with the 12LS-4.5, the Q-Battery 12LS-3.4 has 1.1 Ah less. With 4.5 Ah, the 12LS-4.5 runs longer between charges than the 12LS-3.4 (3.4 Ah). Mind the space: the 12LS-3.4 measures 134 × 67 × 60.5 mm.

### How much does the Q-Battery 12LS-4.5 weigh?

1.4 kg, with 4.5 Ah of capacity. For reference, the Q-Battery 12LS-3.4 (3.4 Ah) weighs 1.35 kg.

### Which battery is equivalent to the Q-Battery 12LS-4.5?

Only other AGM batteries with its dimensions and polarity: Fulbat FP12-4.5, Long WP4.5-12 and Ritar RT1245. Neither an EFB nor a conventional battery replaces the 12LS-4.5.

### Which charger does the Q-Battery 12LS-4.5 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.

## Keep comparing: alternatives to the 12LS-4.5

- [More uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [Full Q-Battery catalogue](https://bateriasonline.es/en/q-battery-batteries)
- [Fulbat FP12-4.5](https://bateriasonline.es/en/fulbat-fp12-4-5) · 4.5 Ah, 90×70×107 mm
- [Long WP4.5-12](https://bateriasonline.es/en/long-wp4-5-12) · 4.5 Ah, 90×70×107 mm

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