# Batteries for UPS / High Discharge UPS > High-rate 12V AGM HR batteries for APC, Eaton, Vertiv, Riello UPS in servers, hospital, data centre. Ritar HR, Q-battery, Fullriver. 5-15 min full power. **Category:** [Start](https://baterias.com/gb/) → [Batteries](https://baterias.com/gb/batteries) → [Stationary Batteries](https://baterias.com/gb/stationary-batteries) - **Canonical URL**: https://baterias.com/gb/batteries-for-sai-ups-of-high-discharge - **Language**: en-GB ## Description **High-rate UPS batteries** are the backbone of backup power in mission-critical environments: **server rooms** APC, Eaton, Vertiv, Schneider, Riello, SOCOMEC; **data centres**; **hospitals** (ICU, theatres, X-ray); electrical substations; industrial control. The key difference vs standard stationary AGM: discharge here is **brutally short and powerful** — 5-15 minutes releasing all energy while the genset starts or load transfers. The fit-for-purpose technology is **12 V AGM HR (High Rate)**: plates optimised for high current, <3% monthly self-discharge, 8-10 year float life at 20 °C. ## AGM HR vs standard stationary AGM **AGM HR** is sized to deliver very high current for a short time (15-min rate or W/cell). If your UPS is rated in kVA and you need 5-15 minutes runtime, go HR. **Standard stationary AGM** is for float with long, gentle discharges (8-h rate) — fit for telecom where outages can last hours. Confusing the two cuts real-world life by 40-60%. ### Table by system | Application | Typical capacity | Bank | Technology | |---|---|---|---| | 1-3 kVA server UPS | 7-9 Ah | 24-48 V | 12V AGM HR | | 5-10 kVA server UPS | 17-26 Ah | 72-96 V | 12V AGM HR | | Hospital theatre UPS | 50-100 Ah | 120-240 V | 12V AGM HR | | Small data centre | 100-200 Ah | 240-480 V | AGM HR / OPzV-HR | | Large data centre | 200-500 Ah | 400-540 V | OPzV / VRLA HR / Lithium | ### Leading brands - [Ritar HR / DC series](https://baterias.com/gb/batteries-ritar) — European reference for APC, Eaton UPS. - Q-battery YQ HR series - [Fullriver HC / HGHL](https://baterias.com/gb/batteries-fullriver) ### Frequently asked questions ### **When to replace UPS batteries?** An annual load-bank test tells you when. If runtime drops below 70% of nominal, replace the whole string. Never one cell only. ### **Lithium in server UPS?** More data centres are migrating to LiFePO4 — half the footprint, 10-15 year life, higher temperature tolerance. 2× upfront, paid back in 5-7 years. ### **How long does shipping take?** Standard delivery **1 to 5 working days** to your country. We process orders within 24h. Catalogue curated by our technical team. **12,179 Trustpilot reviews · 4.5/5**. 24-48 h delivery in mainland Spain and Portugal (orders before 6:00 pm); 14-day returns with free collection on the Iberian mainland. ## Products in this category | Product | Brand | Price | |---|---|---| | [Stationary UPS battery Ritar HR12-96W 12V 24Ah AGM](https://baterias.com/gb/battery-ritar-hr12-96w-12v-24ah) | RITAR | 133,70 € | | [Stationary UPS battery Ritar HR12-70W 12V 18Ah AGM](https://baterias.com/gb/battery-ritar-hr12-70w-12v-18ah) | RITAR | 79,70 € | | [Stationary UPS battery Ritar HR12-80W 12V 20Ah AGM](https://baterias.com/gb/battery-ritar-hr12-80w-12v-hr-agm) | RITAR | 100,60 € | | [Stationary UPS battery Ritar HR12-50W 12V 14Ah AGM](https://baterias.com/gb/battery-ritar-hr12-50w-12v-14ah) | RITAR | 67,90 € | | [Stationary UPS battery Ritar HR12-48WB 12V 12Ah AGM](https://baterias.com/gb/battery-ritar-hr12-48wb-12v-12ah) | RITAR | 60,90 € | | [Stationary UPS battery Ritar HR12-36W 12V 9Ah AGM](https://baterias.com/gb/battery-ritar-hr12-36w-12v-hr-agm) | RITAR | 49,70 € | | [Stationary UPS battery Ritar HR12-32W 12V 8Ah AGM](https://baterias.com/gb/battery-ritar-hr12-32w-12v-8ah) | RITAR | 48,95 € | | [Stationary UPS battery Ritar HR12-28W 12V 7Ah AGM](https://baterias.com/gb/battery-ritar-hr12-28w-12v-7ah) | RITAR | 45,30 € | | [Stationary UPS battery Ritar HR12-20W 12V 5Ah AGM](https://baterias.com/gb/battery-ritar-hr12-20w-12v-ah-hr-agm) | RITAR | 39,60 € | | [Stationary UPS battery Ritar HR12-20BW 12V 5Ah AGM](https://baterias.com/gb/battery-ritar-hr12-20bw-12v-20ah) | RITAR | 51,20 € | | [Stationary UPS battery Ritar HR12-150W 12V 40Ah AGM](https://baterias.com/gb/battery-ritar-hr12-150w-12v-hr-agm) | RITAR | 170,50 € | | [Stationary UPS battery Ritar HR12-125W 12V 33Ah AGM](https://baterias.com/gb/battery-ritar-hr12-125w-12v-hr-agm) | RITAR | 136,50 € | | [Stationary UPS battery Ritar HR12-104W 12V 26Ah AGM](https://baterias.com/gb/battery-ritar-hr12-104w-12v-hr-agm) | RITAR | 139,10 € | ## 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 · 2026-10-24*