# Q-Battery 12LS-3.4 · UPS battery 12V 3.4Ah

![Q-Battery 12LS-3.4 · UPS battery 12V 3.4Ah](https://bateriasonline.es/3704-home_default/q-battery-12ls-3-4.jpg)

> Q-Battery 12LS-3.4: 3.4 Ah UPS battery, 134×67×60.5 mm, AGM. VAT included and shipping cost shown before you pay.

**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-3-4
- **Language**: en
- **Brand**: Q-Battery
- **Reference**: BOL-QBATTERY-12LS-3.4
- **EAN**: 4250889610104
- **MPN**: 12LS-3.4
- **Price**: 26,75 € (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 | 3.4 Ah |
| Length | 134 mm |
| Width | 67 mm |
| Height | 60.5 mm |
| Weight | 1.35 kg |
| Terminal type | F1 (4,75 mm) |

## Quick description

The Q-Battery 12LS-3.4 is an UPS battery with 12 V and 3.4 Ah, measuring 134 × 67 × 60.5 mm.

## Description

## Where the Q-Battery 12LS-3.4 fits

The Q-Battery 12LS-3.4 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. The 12LS-3.4 spends most of its life on float charge, waiting for a power cut.
The 12LS-3.4 belongs to the Q-Battery AGM STANDARD range. [See all Q-Battery batteries](https://bateriasonline.es/en/q-battery-batteries)

## AGM technology in the 12LS-3.4

The 12LS-3.4 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the 12LS-3.4 can be fitted in the boot or under a seat with no risk of spills.

## Q-Battery 12LS-3.4 vs 12LS-4.5 and 12LS-2.9: which one to choose?

Torn between the 12LS-3.4 and another similar Q-Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Q-Battery 12LS-3.4 (this one) | 3.4 Ah | 134 × 67 × 60.5 | 1.35 kg |
| Q-Battery 12LS-4.5 | 4.5 Ah | 90 × 70 × 107 | 1.4 kg |
| Q-Battery 12LS-2.9 | 2.9 Ah | 79 × 56 × 99 | 1.05 kg |

- Q-Battery 12LS-4.5: 1.1 Ah more, a different case (90 × 70 × 107 mm).
- Q-Battery 12LS-2.9: 0.5 Ah less, a different case (79 × 56 × 99 mm).

## Equivalents and alternatives to the Q-Battery 12LS-3.4

No other reference in the catalogue fully matches the dimensions and polarity of the 12LS-3.4; you will find the closest ones among our [uPS batteries](https://bateriasonline.es/en/ups-batteries).

## Q-Battery 12LS-3.4 codes and part numbers

Look for any of these 12LS-3.4 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | 12LS-3.4 |
|---|---|
| EAN | 4250889610104 |
| Terminal type | F1 (4,75mm) |
| Not to be confused with | Q-Battery 12LS-24 (24 Ah), Q-Battery 12LS-33 (35 Ah), Q-Battery 12LS-38 (38 Ah) |

## Check this before ordering the Q-Battery 12LS-3.4

- Capacity of the 12LS-3.4: 3.4 Ah; the same as your current battery or slightly more is fine.
- Measure the space: the 12LS-3.4 takes up 134 × 67 × 60.5 mm.

## Frequently asked questions about the Q-Battery 12LS-3.4

### Q-Battery 12LS-3.4 or 12LS-4.5?

Compared with the 12LS-3.4, the Q-Battery 12LS-4.5 has 1.1 Ah more. 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-4.5 measures 90 × 70 × 107 mm.

### How much does the Q-Battery 12LS-3.4 weigh?

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

### Which charger does the Q-Battery 12LS-3.4 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 12LS-3.4

- [All uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [Full Q-Battery catalogue](https://bateriasonline.es/en/q-battery-batteries)

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