# UPS batteries > Over 290 AGM UPS batteries from Long, Ritar, Fulbat, Q-Battery and Genesis, from 0.7 to 3,000 Ah. Final price with VAT and 14 days to return it. **Category:** [Beginning](https://bateriasonline.es/en/) → [Battery types: starter, deep cycle, traction and stationary](https://bateriasonline.es/en/batteries) → [Stationary VRLA batteries: AGM and GEL](https://bateriasonline.es/en/stationary-batteries) - **Canonical URL**: https://bateriasonline.es/en/ups-batteries - **Language**: en ## Description Replace the batteries in your UPS with equivalent AGM models, such as the 18 Ah Ritar RT12180, and buy online with VAT included. A UPS is only as reliable as the batteries behind it. This section lists the **6 V and 12 V VRLA AGM blocks** used in uninterruptible power supplies for offices, racks and data rooms, from brands such as LONG, RITAR, Q-BATTERY and FULBAT. Search by capacity, size and terminal and swap the worn block for a matching one. ## How a battery works inside a UPS For months it sits on float doing nothing you can see. When the mains fails, the UPS inverter draws on it instantly to keep the load running for a few minutes: long enough for a generator to start or for servers to shut down cleanly. That is a short, heavy discharge, very different from the slow draw of a solar system. ## Values to copy from the old battery - **Voltage and capacity**: the most common sizes are 12 V 7 Ah, 9 Ah, 12 Ah and 18 Ah, while large UPS units take blocks from 40 to 200 Ah. - **Dimensions**: battery bays leave no slack, so match length, width and height including terminals. - **Terminal**: F1 (4.8 mm faston) and F2 (6.3 mm faston) on small blocks; M5, M6 or M8 bolts on bigger ones. A slightly higher capacity in the same case gives more runtime, provided the voltage matches and the block fits. ## Service life and when to replace Standard series usually carry a 3–5 year design life and long-life series (the WPL range from [LONG](https://bateriasonline.es/en/long-batteries), for example) up to 10–12 years, always rated at 20 °C. A UPS in a hot cabinet ages them faster. Warning signs are shorter runtime, a failed self-test or a swollen case. On multi-block units, change the full set with units of the same date code. If your load needs high power for just a few minutes, look at [high-rate UPS batteries](https://bateriasonline.es/en/high-rate-ups-batteries). For other standby uses, go back to [stationary batteries](https://bateriasonline.es/en/stationary-batteries). ## Common questions when replacing UPS batteries ### Do I need to switch the UPS off? It depends on the model: some support hot-swap and some do not. Follow the maker's manual and, once the new blocks are in, let the UPS charge for several hours before running a calibration or self-test. ### Can I mix brands in one UPS? Better not. Even with identical labels, internal resistance differs between manufacturers and the weakest block ends up limiting the runtime of the whole string. ### What should I do with the old batteries? They are lead waste and belong at an authorised collection point. Never put them in household rubbish. ## Choose by brand The same uPS batteries, filtered by manufacturer. Each brand has its own page with all its references and a buying guide. - [Long batteries](https://bateriasonline.es/en/long-batteries) (141) - [Ritar batteries](https://bateriasonline.es/en/ritar-batteries) (55) - [Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries) (54) - [Q-Battery Batteries](https://bateriasonline.es/en/q-battery-batteries) (39) ## Products in this category | Product | Brand | Price | |---|---|---| | [Long WP2.3-12 · UPS battery 12V 2.3Ah](https://bateriasonline.es/en/long-wp2-3-12) | Long | 30,67 € | | [Long WP2.9-12T · UPS battery 12V 2.9Ah](https://bateriasonline.es/en/long-wp2-9-12t) | Long | 19,60 € | | [Long WP5-12 · UPS battery 12V 5Ah](https://bateriasonline.es/en/long-wp5-12) | Long | 37,44 € | | [Long KPH100-12AN · UPS battery 12V 100Ah](https://bateriasonline.es/en/long-kph100-12an) | Long | 258,43 € | | [Long KPH100-12AU · UPS battery 12V 100Ah](https://bateriasonline.es/en/long-kph100-12au) | Long | 258,43 € | | [Long KPH105-12AN · UPS battery 12V 105Ah](https://bateriasonline.es/en/long-kph105-12an) | Long | 279,20 € | | [Long WP18-12SHR · UPS battery 12V 18Ah](https://bateriasonline.es/en/long-wp18-12shr) | Long | 73,60 € | | [Long WP1.2-12T · UPS battery 12V 1.2Ah](https://bateriasonline.es/en/long-wp1-2-12t) | Long | 37,93 € | | [Long WP1236W · UPS battery 12V 9Ah](https://bateriasonline.es/en/long-wp1236w) | Long | 18,62 € | | [Long WP7.2-12 · UPS battery 12V 7.2Ah](https://bateriasonline.es/en/long-wp7-2-12) | Long | 11,76 € | | [Long WP7.2-12A · UPS battery 12V 7.2Ah](https://bateriasonline.es/en/long-wp7-2-12a) | Long | 30,28 € | | [Long WP7-12(28W) · UPS battery 12V 7Ah](https://bateriasonline.es/en/long-wp7-12-28w) | Long | 21,17 € | | [Long WPS5-12 · UPS battery 12V 5Ah](https://bateriasonline.es/en/long-wps5-12) | Long | 27,54 € | | [Long WPS7-12 · UPS battery 12V 7Ah](https://bateriasonline.es/en/long-wps7-12) | Long | 36,56 € | | [Ritar RL21000 · UPS battery 2V 1,000Ah](https://bateriasonline.es/en/ritar-rl21000) | Ritar | 565,66 € | --- *bateriasonline.es — Batteries and accessories · 2026-11-10*