# Stationary UPS battery Ritar RT1245S 12V 4.5Ah AGM ![Stationary UPS battery Ritar RT1245S 12V 4.5Ah AGM](https://baterias.com/709-home_default/battery-ritar-rt1245s-12v-45ah.jpg) > Ritar RT1245S stationary UPS battery 12V 4.5Ah AGM. RT range. Dimensions 195×47×76 mm. Long float life for UPS, alarms and standby equipment. **Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) → [RITAR](https://baterias.com/gb/ritar) - **Canonical URL**: https://baterias.com/gb/battery-ritar-rt1245s-12v-45ah - **Language**: en-GB - **Brand**: RITAR - **Reference**: BCOM-RITAR-RT1245S - **MPN**: RT1245S - **Price**: 43,80 € (VAT incl., Spain) - **Last updated**: 2026-08-30 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | RITAR | | Reference | RT1245 S | | Model | RITAR RT | | Voltage (V) | 12 V | | Largo | 195 mm | | Ancho | 47 mm | | Alto | 76 mm | | Tecnología | AGM | | Terminal type | F1/F2 | | Capacity (C20) | 4 5 Ah (c20) | ## Quick description **Ritar RT1245S 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 195×47×76 mm ⚙️ Technology AGM ⚖️ Weight 1,5 kg 🏷️ Model RITAR RT ## Description ## Stationary battery Ritar RT1245S RT 4Ah 12V 12*V* Voltage 4*Ah* Capacity 1.50*kg* Weight The **Ritar RT1245S** with AGM technology is a **4 Ah**, **12 V** backup battery for UPS, alarms, telecoms and emergency lighting. Measuring 195 × 47 × 76 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 4 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 Ritar RT1245S is for The Ritar RT1245S 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 1.50 kg and F1/F2 terminals. ### Will it fit your current battery tray? It has external dimensions of 195 × 47 × 76 mm and weighs 1.50 kg. It uses F1/F2 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. ### What Ritar does differently With more than twenty years making sealed lead batteries, Ritar offers general-purpose, long-life, high-rate and front-terminal ranges for every stationary application. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### The Ritar RT1245S: RT range and AGM technology The RT1245S is part of the Ritar **RT** 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. ### Care and maintenance 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. ### Manufacturer's warranty The Ritar RT1245S 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 this battery AGM? What is it for? Yes. The Ritar RT1245S is AGM (Absorbent Glass Mat): sealed lead-acid, with the electrolyte absorbed in glass fibre. Its advantages: more charge/discharge cycles than a conventional battery and better heat tolerance. ### What are the dimensions of the Ritar RT1245S battery? Before buying, measure the space in your device: one extra millimetre can stop the hold-down clamp from closing. The Ritar RT1245S takes up 195×47×76 mm (length, width and height, terminals included). ## 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 · 2026-11-10*