# Stationary UPS battery Ritar RT12280S 12V 28Ah AGM ![Stationary UPS battery Ritar RT12280S 12V 28Ah AGM](https://baterias.com/712-home_default/battery-ritar-rt12280s-12v-28ah.jpg) > Ritar RT12280S stationary UPS battery 12V 28Ah AGM. RT range. Dimensions 165×126×174 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-rt12280s-12v-28ah - **Language**: en-GB - **Brand**: RITAR - **Reference**: BCOM-RITAR-RT12280S - **MPN**: RT12280S - **Price**: 97,50 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | RITAR | | Reference | RT12280 S | | Model | RITAR RT | | Voltage (V) | 12 V | | Largo | 165 mm | | Ancho | 126 mm | | Alto | 174 mm | | Tecnología | AGM | | Terminal type | M6 | | Capacity (C20) | 28 Ah (c20) | ## Quick description **Ritar RT12280S 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 165×126×174 mm ⚙️ Technology AGM ⚖️ Weight 8,8 kg 🏷️ Model RITAR RT ## Description ## Stationary battery Ritar RT12280S RT 28Ah 12V 12*V* Voltage 28*Ah* Capacity 8.80*kg* Weight The **12 V**, **28 Ah** **Ritar RT12280S** stationary battery from the **RT** range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Measuring 165 × 126 × 174 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 28 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 RT12280S is for The Ritar RT12280S 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 8.80 kg and M6 terminals. ### Will it fit your current battery tray? It has external dimensions of 165 × 126 × 174 mm and weighs 8.80 kg. It uses M6 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 Ritar does differently Ritar is one of the world's largest VRLA battery manufacturers. Its RA, RT, RL, HR and FT series equip UPS, telecoms and solar systems worldwide with very consistent quality. All the Ritar batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Ritar RT12280S: RT range and AGM technology Within the Ritar catalogue, the **RT** series groups the references designed for this use. The RT12280S is the 28 Ah model of that family, with the same performance as its siblings in other sizes. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Usage and maintenance tips 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. ### Warranty and coverage The Ritar RT12280S 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. ### Delivery times and returns Order **before 6:00 pm** 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 **14 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 RT12280S from Ritar 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. ### What size is this battery? Dimensions (length × width × height) are 165×126×174 mm — also written as 165x126x174 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. ## 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 · 2026-10-31*