# Stationary UPS battery Ritar RL21000 2V 1000Ah AGM ![Stationary UPS battery Ritar RL21000 2V 1000Ah AGM](https://baterias.com/732-home_default/battery-ritar-rl21000-2v-1000ah.jpg) > Ritar RL21000 stationary UPS battery 2V 1000Ah AGM. RL range. Dimensions 383×171×372 mm. Long float life for UPS, alarms and standby equipment. **Category:** [Batteries for telecommunications systems](https://baterias.com/gb/batteries-for-telecommunications-systems) → [RITAR](https://baterias.com/gb/ritar) - **Canonical URL**: https://baterias.com/gb/battery-ritar-rl21000-2v-1000ah - **Language**: en-GB - **Brand**: RITAR - **Reference**: BCOM-RITAR-RL21000 - **MPN**: RL21000 - **Price**: 577,20 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | RITAR | | Reference | RL21000 | | Model | RITAR RL | | Voltage (V) | 2 V | | Largo | 383 mm | | Ancho | 171 mm | | Alto | 372 mm | | Peso | 51 kg | | Tecnología | AGM | | Terminal type | F10(M8) | | Capacity (C20) | 1000 | | Capacity (C10) | 1000 Ah (c10) | | Capacity (C5) | 875 Ah (c5) | ## Quick description **Ritar RL21000 2V 1000Ah** 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 2 V ⚡ Capacity 1000 Ah C10 📏 Dimensions 383×171×372 mm ⚙️ Technology AGM ⚖️ Weight 51 kg 🏷️ Model RITAR RL ## Description ## Stationary battery Ritar RL21000 RL 1,000Ah 2V 2*V* Voltage 1,000*Ah* Capacity 51*kg* Weight The **2 V**, **1,000 Ah** **Ritar RL21000** stationary battery from the **RL** range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. It replaces the original battery without adaptation in UPS, alarm and emergency systems with a 383 × 171 × 372 mm format: same 1,000 Ah capacity. - Sealed and gas-free: suitable for cabinets and offices. - Maintenance-free for its whole service life. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Long float life under permanent charge. ### What the Ritar RL21000 is for The Ritar RL21000 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 51 kg and F10(M8) terminals. ### Will it fit your current battery tray? It has external dimensions of 383 × 171 × 372 mm and weighs 51 kg. It uses F10(M8) terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### The Ritar RL21000: RL range and AGM technology Within the Ritar catalogue, the **RL** series groups the references designed for this use. The RL21000 is the 1,000 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. ### 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. We guarantee that every Ritar arrives new, charged and with the manufacturer's full warranty. ### Manufacturer's warranty The Ritar RL21000 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. ### Care and maintenance 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. ### 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 RL21000 model AGM? What does this technology offer? Yes. The RL21000 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 is the Ritar RL21000 battery installed in the vehicle? 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. ### What is the service life of the RL21000 model? Expected lifespan of the Ritar RL21000 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 size is this battery? Dimensions (length × width × height) are 383×171×372 mm — also written as 383x171x372 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 interchangeable batteries are there for this one? 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**: 4.58 / 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 · 2026-10-05*