# Stationary UPS battery Q-battery 12LS-4.5 12V 4.5Ah AGM ![Stationary UPS battery Q-battery 12LS-4.5 12V 4.5Ah AGM](https://baterias.com/1503-home_default/battery-q-battery-12ls-4_5-12v-45ah.jpg) > Q-battery 12LS-4.5 stationary UPS battery 12V 4.5Ah AGM. AGM STANDARD range. Dimensions 90×70×107 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-4_5-12v-45ah - **Language**: en-GB - **Brand**: Q-battery - **Reference**: BCOM-Q-BATTERY-12LS-4.5 - **EAN**: 4250889610135 - **MPN**: 12LS-4.5 - **Price**: 26,30 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | Q-Battery | | Reference | 12 LS-4.5 | | Model | AGM STANDARD | | Voltage (V) | 12 V | | Largo | 90 cm | | Ancho | 70 cm | | Alto | 107 cm | | Peso | 1.4 kg | | Tecnología | AGM | | Terminal type | F1 (4 75 mm) | | Capacity (C20) | 4.5 Ah (c20) | ## Quick description **Q-battery 12LS-4.5 12V 4Ah** 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 4 Ah C20 📏 Dimensions 90×70×107 mm ⚙️ Technology AGM ⚖️ Weight 1,4 kg 🏷️ Model AGM STANDARD ## Description ## Stationary battery Q-Battery 12LS-4.5 4.5Ah 12V 12*V* Voltage 4.5*Ah* Capacity 1.40*kg* Weight Designed for UPS, alarms, telecoms and emergency lighting, the **Q-Battery 12LS-4.5** offers **4.5 Ah** with AGM technology on permanent float charge. It measures 90 × 70 × 107 mm, the format sought by anyone replacing a 4.5 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. ### What the Q-Battery 12LS-4.5 is for The Q-Battery 12LS-4.5 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 1.40 kg and F1 (4 75mm) terminals. ### Technology inside the Q-Battery 12LS-4.5 Within the Q-Battery catalogue, the 12LS-4.5 is the 4.5 Ah model designed for this application. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### Size, terminals and hold-down of the Q-Battery 12LS-4.5 In terms of format, the Q-Battery 12LS-4.5 measures 90 × 70 × 107 mm (length × width × height) and weighs 1.40 kg. It uses F1 (4 75mm) terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### Q-Battery: the maker behind the 12LS-4.5 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### How to make it last longer Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Replace all the batteries in the set at once and avoid environments continuously above 25 °C. ### Warranty and coverage The Q-Battery 12LS-4.5 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. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes. The 12LS-4.5 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-4.5 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 this page. 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. ### How many years does this battery last? Expected lifespan of the Q-battery 12LS-4.5 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-4.5 model? Dimensions (length × width × height) are 90×70×107 mm — also written as 90x70x107 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 12LS-4.5? 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. ## Reviews - **Average rating**: 4.83 / 5 (26 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-30*