# Stationary UPS battery Q-battery 12LS-2.9 12V 2.9Ah AGM ![Stationary UPS battery Q-battery 12LS-2.9 12V 2.9Ah AGM](https://baterias.com/1501-home_default/battery-q-battery-12ls-2_9-12v-29ah.jpg) > Q-battery 12LS-2.9 stationary UPS battery 12V 2.9Ah AGM. AGM STANDARD range. Dimensions 79×56×99 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-2_9-12v-29ah - **Language**: en-GB - **Brand**: Q-battery - **Reference**: BCOM-Q-BATTERY-12LS-2.9 - **EAN**: 4250889610074 - **MPN**: 12LS-2.9 - **Price**: 23,90 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | Q-Battery | | Reference | 12 LS-2.9 | | Model | AGM STANDARD | | Voltage (V) | 12 V | | Largo | 79 mm | | Ancho | 56 mm | | Alto | 99 mm | | Peso | 1.05 kg | | Tecnología | AGM | | Terminal type | F1 (4 75 mm) | | Capacity (C20) | 2.9 Ah (c20) | ## Quick description **Q-battery 12LS-2.9 12V 2Ah** 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 2 Ah C20 📏 Dimensions 79×56×99 mm ⚙️ Technology AGM ⚖️ Weight 1,05 kg 🏷️ Model AGM STANDARD ## Description ## Stationary battery Q-Battery 12LS-2.9 2.9Ah 12V 12*V* Voltage 2.9*Ah* Capacity 1.05*kg* Weight The **Q-Battery 12LS-2.9** with AGM technology is a **2.9 Ah**, **12 V** backup battery for UPS, alarms, telecoms and emergency lighting. It replaces the original battery without adaptation in UPS, alarm and emergency systems with a 79 × 56 × 99 mm format: same 2.9 Ah capacity. - Sealed and gas-free: suitable for cabinets and offices. - Maintenance-free for its whole service life. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Long float life under permanent charge. ### What the Q-Battery 12LS-2.9 is for Designed for UPS, alarms, telecoms and emergency lighting, the Q-Battery 12LS-2.9 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 1.05 kg and F1 (4 75mm) terminals. ### Dimensions, polarity and mounting The Q-Battery 12LS-2.9 is made in the 79 × 56 × 99 mm format and weighs 1.05 kg. It uses F1 (4 75mm) 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. ### Technology inside the Q-Battery 12LS-2.9 Within the Q-Battery catalogue, the 12LS-2.9 is the 2.9 Ah model designed for this application. 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. ### Why choose Q-Battery batteries 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. ### Warranty and coverage The Q-Battery 12LS-2.9 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. ### Care and maintenance Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is the 12LS-2.9 model AGM? What does this technology offer? Yes: the 12LS-2.9 from Q-battery uses AGM (Absorbent Glass Mat) technology, a sealed lead-acid battery whose electrolyte soaks a glass-fibre mat. It withstands more cycles than a conventional battery and copes better with heat. ### What are the dimensions of the Q-battery 12LS-2.9 battery? It measures 79×56×99 mm in length × width × height, with the terminals included in the height. Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. ## 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 --- *baterias.com — Automotive batteries · 2026-11-07*