# Stationary UPS battery Q-battery 12LSX-9 12V 28Ah AGM ![Stationary UPS battery Q-battery 12LSX-9 12V 28Ah AGM](https://baterias.com/1530-home_default/battery-q-battery-12lsx-9-12v-9ah.jpg) > Q-battery 12LSX-9 stationary UPS battery 12V 28Ah AGM. AGM LONG LIFE range. Dimensions 165×125×175 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-12lsx-9-12v-9ah - **Language**: en-GB - **Brand**: Q-battery - **Reference**: BCOM-Q-BATTERY-12LSX-9 - **MPN**: 12LSX-9 - **Price**: 36,90 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | Q-Battery | | Reference | 12 LSX-9 | | Model | AGM LONG LIFE | | Voltage (V) | 12 V | | Largo | 165 cm | | Ancho | 125 cm | | Alto | 175 cm | | Peso | 9.3 kg | | Tecnología | AGM | | Terminal type | F13 (M5) | | Capacity (C20) | 8.8 Ah (c20) | ## Quick description **Q-battery 12LSX-9 12V 28Ah** 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 28 Ah C20 📏 Dimensions 165×125×175 mm ⚙️ Technology AGM ⚖️ Weight 9,3 kg 🏷️ Model AGM LONG LIFE ## Description ## Stationary battery Q-Battery 12LSX-9 AGM Long Life 8.8Ah 12V 12*V* Voltage 8.8*Ah* Capacity 9.30*kg* Weight The **12 V**, **8.8 Ah** **Q-Battery 12LSX-9** stationary battery from the **AGM Long Life** range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. It measures 165 × 125 × 175 mm, the format sought by anyone replacing a 8.8 Ah battery in UPS, alarm and emergency systems. - Maintenance-free for its whole service life. - Sealed and gas-free: suitable for cabinets and offices. - Long float life under permanent charge. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. ### Dimensions, polarity and mounting It has external dimensions of 165 × 125 × 175 mm and weighs 9.30 kg. It uses F13 (M5) 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. ### What the Q-Battery 12LSX-9 is for The Q-Battery 12LSX-9 is designed for UPS, alarms, telecoms and emergency lighting: it sits on float charge and responds instantly to a mains failure. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 9.30 kg and F13 (M5) terminals. ### The Q-Battery 12LSX-9: AGM Long Life range and AGM technology The 12LSX-9 is part of the Q-Battery **AGM Long Life** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. 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. ### What Q-Battery does differently The Q-Battery catalogue runs from small alarm batteries to large traction monoblocs, always with sealed, maintenance-free technology. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Manufacturer's warranty The Q-Battery 12LSX-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. ### 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. Replace all the batteries in the set at once and avoid environments continuously above 25 °C. ### Shipping, delivery and returns Orders placed **before [[ks:cutoff]]** 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 **[[ks:return_days]] 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 12LSX-9 an AGM battery and what are the benefits of AGM? Yes. The 12LSX-9 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 12LSX-9 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 12LSX-9 model? Expected lifespan of the Q-battery 12LSX-9 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 dimensions of the Q-battery 12LSX-9 battery? Dimensions (length × width × height) are 165×125×175 mm — also written as 165x125x175 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. ### Which batteries are equivalent to the Q-battery 12LSX-9? 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 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-15*