# Stationary UPS battery Q-battery 12LS-0.8 JST 12V 0.8Ah AGM

![Stationary UPS battery Q-battery 12LS-0.8 JST 12V 0.8Ah AGM](https://baterias.com/1498-home_default/battery-q-battery-12ls-0_8-jst-12v-08ah.jpg)

> Q-battery 12LS-0.8 JST stationary UPS battery 12V 0.8Ah AGM. AGM STANDARD range. Dimensions 96×25×62 mm. Long float life for UPS, alarms and standby equipment.

**Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) → [Q-battery](https://baterias.com/gb/q-battery)

- **Canonical URL**: https://baterias.com/gb/battery-q-battery-12ls-0_8-jst-12v-08ah
- **Language**: en-GB
- **Brand**: Q-battery
- **Reference**: BCOM-Q-BATTERY-12LS-0.8 JST
- **MPN**: 12LS-0.8 JST
- **Price**: 24,70 €
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Q-Battery |
| Reference | 12 LS-0.8 JST |
| Model | AGM STANDARD |
| Voltage (V) | 12 V |
| Largo | 96 cm |
| Ancho | 25 cm |
| Alto | 62 cm |
| Peso | 0.5 kg |
| Tecnología | AGM |
| Terminal type | JST |
| Capacity (C20) | 0.8 Ah (c20) |

## Quick description

**Q-battery 12LS-0.8 JST 12V 0Ah** is a stationary battery for backup power systems: UPS, alarms, telecom and emergency lighting. Long float-life under permanent charge and instant response to mains outages with no noticeable voltage drop.

## Why this stationary battery?

- **Instant response** when the mains drop, no voltage dip
- **Long life under 24/7 charge** optimised for permanent service
- **Compatible with your system** existing UPS units and alarm control panels

🔌 Voltage
12 V

⚡ Capacity
0 Ah C20

📏 Dimensions
96×25×62 mm

⚙️ Technology
AGM

⚖️ Weight
0,5 kg

🏷️ Model
AGM STANDARD

## Description

## Stationary battery Q-Battery 12LS-0.8 JST 0.8Ah 12V

12*V* Voltage
0.8*Ah* Capacity
0.50*kg* Weight

The **12 V**, **0.8 Ah** **Q-Battery 12LS-0.8 JST** stationary battery with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Measuring 96 × 25 × 62 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 0.8 Ah battery of this format.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Instant response to mains failures.
- Low self-discharge and high reliability.
- Standard format for UPS and emergency systems.

### What the Q-Battery 12LS-0.8 JST is for

Designed for UPS, alarms, telecoms and emergency lighting, the Q-Battery 12LS-0.8 JST is sealed, gas-free and suitable for technical cabinets and offices. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 0.50 kg and JST terminals.

### Size, terminals and hold-down of the Q-Battery 12LS-0.8 JST

The Q-Battery 12LS-0.8 JST is made in the 96 × 25 × 62 mm format and weighs 0.50 kg. It uses JST terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.

### Q-Battery: the maker behind the 12LS-0.8 JST

Q-Battery specialises in AGM and GEL VRLA batteries for UPS, telecoms, solar and deep cycling, with long-life and tubular-plate series for industrial use. All the Q-Battery batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### Technology inside the Q-Battery 12LS-0.8 JST

Q-Battery builds the 12LS-0.8 JST to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.

### How to make it last longer

Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators.

### Manufacturer's warranty

The Q-Battery 12LS-0.8 JST comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.

### When you get it and how to return it

Orders placed **before 6:00 pm** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **14 days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

## Frequently asked questions

### Is the Q-battery 12LS-0.8 JST an AGM battery and what are the benefits of AGM?

Yes. The 12LS-0.8 JST from Q-battery uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.

### How do I fit the 12LS-0.8 JST model in my device?

In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### What is the service life of the 12LS-0.8 JST model?

Expected lifespan of the Q-battery 12LS-0.8 JST is 5 to 8 years in mild-climate device use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the measurements of the 12LS-0.8 JST model?

Dimensions (length × width × height) are 96×25×62 mm — also written as 96x25x62 mm — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### What are the equivalents of the 12LS-0.8 JST model?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-25*