# Q-Battery 12SEM-105 · Motorhome battery 12V 105Ah

![Q-Battery 12SEM-105 · Motorhome battery 12V 105Ah](https://bateriasonline.es/3463-home_default/q-battery-12sem-105.jpg)

> Q-Battery 12SEM-105: 105 Ah motorhome battery, 353×175×190 mm, positive terminal on the right. Compare sizes and equivalents; 14-day returns.

**Category:** [Leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan) → [Q-Battery](https://bateriasonline.es/en/q-battery-batteries)

- **Canonical URL**: https://bateriasonline.es/en/q-battery-12sem-105
- **Language**: en
- **Brand**: Q-Battery
- **Reference**: BOL-QBATTERY-12SEM-105
- **MPN**: 12SEM-105
- **Price**: 203,45 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Q-Battery |
| Range | SEMITRACTION BATTERY |
| Application | Motorhomes and caravans |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 105 Ah |
| Length | 353 mm |
| Width | 175 mm |
| Height | 190 mm |
| Weight | 25 kg |
| Polarity | Positive terminal on the right |
| Terminal type | A-Pole |

## Quick description

The Q-Battery 12SEM-105 is a motorhome battery with 12 V and 105 Ah, measuring 353 × 175 × 190 mm, with the positive terminal on the right.

## Description

## The Q-Battery 12SEM-105 at a glance

The Q-Battery 12SEM-105 is made for the living area of a motorhome. The 12SEM-105 powers the living area, separate from the vehicle's starter battery.
The 12SEM-105 belongs to the Q-Battery SEMITRACTION BATTERY range. [More Q-Battery batteries](https://bateriasonline.es/en/q-battery-batteries)

## Equivalents and alternatives to the Q-Battery 12SEM-105

No other reference in the catalogue fully matches the dimensions and polarity of the 12SEM-105; you will find the closest ones among our [leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan).

## Q-Battery 12SEM-105 vs 12SEM-120 and 12SEM-80

Torn between the 12SEM-105 and another similar Q-Battery? This is what changes:

| Model | Capacity | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|
| Q-Battery 12SEM-105 (this one) | 105 Ah | 353 × 175 × 190 | right | 25 kg |
| Q-Battery 12SEM-120 | 120 Ah | 347 × 175 × 234 | right | 29.9 kg |
| Q-Battery 12SEM-80 | 80 Ah | 278 × 175 × 190 | right | 19.5 kg |

- Q-Battery 12SEM-120: 15 Ah more, a different case (347 × 175 × 234 mm).
- Q-Battery 12SEM-80: 25 Ah less, a different case (278 × 175 × 190 mm).

## Lead-acid technology in the 12SEM-105

Inside, the 12SEM-105 is classic lead-acid: liquid electrolyte and lead plates. It is a robust, well-known technology with a good capacity-to-price ratio, and still the basis of most cars, trucks and traction equipment.

## What to look at before buying the 12SEM-105

- Length, width and height of the 12SEM-105: 353 × 175 × 190 mm.
- With the terminals facing you, the positive terminal of the 12SEM-105 is on the right.
- Your current battery should say about 105 Ah; a little more is also fine.

## Q-Battery 12SEM-105 codes and part numbers

Shops, garages and catalogues identify the 12SEM-105 with these codes:

| Commercial reference | 12SEM-105 |
|---|---|
| Terminal type | A-Pole |
| Not to be confused with | Q-Battery 12SEM-135 (135 Ah) |

## Frequently asked questions about the Q-Battery 12SEM-105

### Q-Battery 12SEM-105 or 12SEM-120?

Compared with the 12SEM-105, the Q-Battery 12SEM-120 has 15 Ah more. With 120 Ah, the 12SEM-120 runs longer between charges than the 12SEM-105 (105 Ah). Mind the space: the 12SEM-120 measures 347 × 175 × 234 mm.

### How much does the Q-Battery 12SEM-105 weigh?

The 12SEM-105 weighs 25 kg. For reference, the Q-Battery 12SEM-120 (120 Ah) weighs 29.9 kg.

### Which side is the positive terminal on the Q-Battery 12SEM-105?

The 12SEM-105 has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

### How many days of autonomy does the Q-Battery 12SEM-105 give in a motorhome?

It depends on consumption. With 105 Ah and LED lights, pump and a gas fridge, 2 or 3 days without recharging is normal; with an electric fridge, much less.

## More batteries to compare with the 12SEM-105

- [More leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan)
- [Full Q-Battery catalogue](https://bateriasonline.es/en/q-battery-batteries)
- [Kronobat DP-95-EFB](https://bateriasonline.es/en/kronobat-dp-95-efb) · 95 Ah, 850 A, 353×175×190 mm
- [Q-Battery 12SEM-60](https://bateriasonline.es/en/q-battery-12sem-60) · 60 Ah, 246×175×190 mm

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