# Q-Battery 12LS-33 · UPS battery 12V 35Ah

![Q-Battery 12LS-33 · UPS battery 12V 35Ah](https://bateriasonline.es/3727-home_default/q-battery-12ls-33.jpg)

> Q-Battery 12LS-33: 35 Ah UPS battery, 195×130×159 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-33
- **Language**: en
- **Brand**: Q-Battery
- **Reference**: BOL-QBATTERY-12LS-33
- **MPN**: 12LS-33
- **Price**: 130,83 € (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 | 35 Ah |
| Length | 195 mm |
| Width | 130 mm |
| Height | 159 mm |
| Weight | 10.6 kg |
| Terminal type | F11 (M6) |

## Quick description

The Q-Battery 12LS-33 is an UPS battery with 12 V and 35 Ah, measuring 195 × 130 × 159 mm.

## Description

## Who the Q-Battery 12LS-33 is for

The Q-Battery 12LS-33 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-33, check the terminal type and terminal orientation in your UPS.
The 12LS-33 belongs to the Q-Battery AGM STANDARD range. [The full range of Q-Battery batteries](https://bateriasonline.es/en/q-battery-batteries)

## AGM technology in the 12LS-33

The 12LS-33 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the 12LS-33 can be fitted in the boot or under a seat with no risk of spills.

## Q-Battery 12LS-33 vs 12LS-38 and 12LS-45: which one to choose?

How the 12LS-33 compares with Q-Battery batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Q-Battery 12LS-33 (this one) | 35 Ah | 195 × 130 × 159 | 10.6 kg |
| Q-Battery 12LS-38 | 38 Ah | 197 × 165 × 170 | 13.2 kg |
| Q-Battery 12LS-45 | 45 Ah | 197 × 165 × 170 | 14.5 kg |

- Q-Battery 12LS-38: 3 Ah more, a different case (197 × 165 × 170 mm).
- Q-Battery 12LS-45: 10 Ah more, a different case (197 × 165 × 170 mm).

## Equivalents and alternatives to the Q-Battery 12LS-33

No other reference in the catalogue fully matches the dimensions and polarity of the 12LS-33; you will find the closest ones among our [uPS batteries](https://bateriasonline.es/en/ups-batteries).

## Q-Battery 12LS-33 codes and part numbers

Look for any of these 12LS-33 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | 12LS-33 |
|---|---|
| Terminal type | F11 (M6) |
| Not to be confused with | Q-Battery 12LS-3.4 (3.4 Ah), Q-Battery 12LS-38 (38 Ah) |

## What to look at before buying the 12LS-33

- Capacity of the 12LS-33: 35 Ah; the same as your current battery or slightly more is fine.
- Length, width and height of the 12LS-33: 195 × 130 × 159 mm.

## Frequently asked questions about the Q-Battery 12LS-33

### Q-Battery 12LS-33 or 12LS-38?

Compared with the 12LS-33, the Q-Battery 12LS-38 has 3 Ah more. With 38 Ah, the 12LS-38 runs longer between charges than the 12LS-33 (35 Ah). Mind the space: the 12LS-38 measures 197 × 165 × 170 mm.

### How much does the Q-Battery 12LS-33 weigh?

The 12LS-33 weighs 10.6 kg. For reference, the Q-Battery 12LS-38 (38 Ah) weighs 13.2 kg.

### Which charger does the Q-Battery 12LS-33 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.

## Other options if you are unsure about the 12LS-33

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

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