# Stationary UPS battery Ritar HR12-28W 12V 7Ah AGM ![Stationary UPS battery Ritar HR12-28W 12V 7Ah AGM](https://baterias.com/776-home_default/battery-ritar-hr12-28w-12v-7ah.jpg) > Ritar HR12-28W stationary UPS battery 12V 7Ah AGM. HR range. Dimensions 151×65×100 mm. Long float life for UPS, alarms and standby equipment. **Category:** [Batteries for UPS / High Discharge UPS](https://baterias.com/gb/batteries-for-sai-ups-of-high-discharge) → [RITAR](https://baterias.com/gb/ritar) - **Canonical URL**: https://baterias.com/gb/battery-ritar-hr12-28w-12v-7ah - **Language**: en-GB - **Brand**: RITAR - **Reference**: BCOM-RITAR-HR12-28W - **MPN**: HR12-28W - **Price**: 45,30 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | RITAR | | Reference | HR12-28 W | | Model | RITAR HR | | Voltage (V) | 12 V | | Largo | 151 mm | | Ancho | 65 mm | | Alto | 100 mm | | Tecnología | AGM | | Terminal type | F1 / F2 | | Capacity (C20) | 7 Ah (c20) | ## Quick description **Ritar HR12-28W 12V 7Ah** 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 7 Ah C20 📏 Dimensions 151×65×100 mm ⚙️ Technology AGM ⚖️ Weight 2,08 kg 🏷️ Model RITAR HR ## Description ## Stationary battery Ritar HR12-28W HR 7Ah 12V 12*V* Voltage 7*Ah* Capacity 2.08*kg* Weight The **12 V**, **7 Ah** **Ritar HR12-28W** stationary battery from the **HR** range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Measuring 151 × 65 × 100 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 7 Ah battery of this format. - Low self-discharge and high reliability. - Standard format for UPS and emergency systems. - AGM: faster recharging and better cycle resistance than a conventional battery. - Instant response to mains failures. ### What the Ritar HR12-28W is for Designed for UPS, alarms, telecoms and emergency lighting, the Ritar HR12-28W 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 2.08 kg and F1 / F2 terminals. ### The Ritar HR12-28W: HR range and AGM technology Within the Ritar catalogue, the **HR** series groups the references designed for this use. The HR12-28W is the 7 Ah model of that family, with the same performance as its siblings in other sizes. 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. ### Will it fit your current battery tray? It has external dimensions of 151 × 65 × 100 mm and weighs 2.08 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. ### Why choose Ritar batteries 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. We guarantee that every Ritar arrives new, charged and with the manufacturer's full warranty. ### Usage and maintenance tips 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. ### Manufacturer's warranty The Ritar HR12-28W 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 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 and Canary 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 HR12-28W model AGM? What does this technology offer? Yes. The HR12-28W 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. ### How do I fit the HR12-28W 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 long does the Ritar HR12-28W battery last? Expected lifespan of the Ritar HR12-28W 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 Ritar HR12-28W battery? Dimensions (length × width × height) are 151×65×100 mm — also written as 151x65x100 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 Ritar HR12-28W? 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**: 4.66 / 5 (10 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 · 2026-10-04*