# Telecom battery Ritar FT12-90 12V 90Ah AGM ![Telecom battery Ritar FT12-90 12V 90Ah AGM](https://baterias.com/782-home_default/battery-ritar-ft12-90-12v-ft-agm.jpg) > Ritar FT12-90 telecom battery 12V 90Ah AGM. FT range. Dimensions 563×114×188 mm. Front terminal and long float life for cabinets and repeater sites. **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-ft12-90-12v-ft-agm - **Language**: en-GB - **Brand**: RITAR - **Reference**: BCOM-RITAR-FT12-90 - **MPN**: FT12-90 - **Price**: 311,10 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | RITAR | | Reference | FT12-90 | | Model | RITAR FT | | Voltage (V) | 12 V | | Largo | 563 mm | | Ancho | 114 mm | | Alto | 188 mm | | Peso | 26.5 kg | | Tecnología | AGM | | Terminal type | F6 | | Capacity (C20) | 90 | | Capacity (C10) | 90 Ah (c10) | ## Quick description **Ritar FT12-90 12V 90Ah** is a front-terminal telecom battery: designed for cabinets and racks where servicing is done from the front. ### Why this telecom 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 90 Ah C10 📏 Dimensions 563×114×188 mm ⚙️ Technology AGM ⚖️ Weight 26,5 kg 🏷️ Model RITAR FT ## Description ## Stationary battery Ritar FT12-90 FT 90Ah 12V 12*V* Voltage 90*Ah* Capacity 26.50*kg* Weight Designed for UPS, alarms, telecoms and emergency lighting, the **Ritar FT12-90** from the **FT** range offers **90 Ah** with AGM technology on permanent float charge. It replaces the original battery without adaptation in UPS, alarm and emergency systems with a 563 × 114 × 188 mm format: same 90 Ah capacity. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Long float life under permanent charge. - Sealed and gas-free: suitable for cabinets and offices. - Maintenance-free for its whole service life. ### What the Ritar FT12-90 is for The Ritar FT12-90 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 26.50 kg and F6 terminals. ### Will it fit your current battery tray? In terms of format, the Ritar FT12-90 measures 563 × 114 × 188 mm (length × width × height) and weighs 26.50 kg. It uses F6 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. ### Ritar: the maker behind the FT12-90 With more than twenty years making sealed lead batteries, Ritar offers general-purpose, long-life, high-rate and front-terminal ranges for every stationary application. We guarantee that every Ritar arrives new, charged and with the manufacturer's full warranty. ### The Ritar FT12-90: FT range and AGM technology Within the Ritar catalogue, the **FT** series groups the references designed for this use. The FT12-90 is the 90 Ah model of that family, with the same performance as its siblings in other sizes. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### Care and maintenance Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. ### Official warranty The Ritar FT12-90 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. ### When you get it and how to return it Order **before [[ks:cutoff]]** 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 **[[ks:return_days]] 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 the Ritar FT12-90 an AGM battery and what are the benefits of AGM? Yes. The FT12-90 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 FT12-90 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 FT12-90 battery last? Expected lifespan of the Ritar FT12-90 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 measurements of the FT12-90 model? Dimensions (length × width × height) are 563×114×188 mm — also written as 563x114x188 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 FT12-90? 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**: 4.79 / 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 · 2026-10-02*