# Stationary UPS battery Fulbat FP12-2.3 12V 2.3Ah AGM ![Stationary UPS battery Fulbat FP12-2.3 12V 2.3Ah AGM](https://baterias.com/6326-home_default/battery-fulbat-fp12-2-3-12v-2-3ah.jpg) > Fulbat FP12-2.3 stationary UPS battery 12V 2.3Ah AGM. FP General Purpose range. Dimensions 178Γ—35Γ—66 mm, + terminal on the left. Long float life. **Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) β†’ [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-fp12-2-3-12v-2-3ah - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FP12-2.3 - **MPN**: FP12-2.3 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT FP General Purpose | | Voltage (V) | 12 V | | Largo | 178 mm | | Ancho | 35 mm | | Alto | 66 mm | | TecnologΓ­a | AGM | | Terminal layout | Positive left | | Terminal type | FASTON-4.8 | | Capacity (C20) | 2.3 Ah | ## Quick description **Fulbat FP12-2.3 12V 2,3Ah** 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 πŸ”Œ Voltage 12 V ⚑ Capacity 2,3 Ah C20 πŸ“ Dimensions 178Γ—35Γ—66 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left ## Description ## Stationary battery Fulbat FP12-2.3 2.3Ah 12V 12*V* Voltage 2.3*Ah* Capacity The **Fulbat FP12-2.3** with AGM technology is a **2.3 Ah**, **12 V** backup battery for UPS, alarms, telecoms and emergency lighting. It replaces the original battery without adaptation in UPS, alarm and emergency systems with a 178 Γ— 35 Γ— 66 mm format: same 2.3 Ah capacity and the positive terminal on the left. - 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 Fulbat FP12-2.3 is for Designed for UPS, alarms, telecoms and emergency lighting, the Fulbat FP12-2.3 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 FASTON-4.8 terminals. ### Size, terminals and hold-down of the Fulbat FP12-2.3 The Fulbat FP12-2.3 is made in the 178 Γ— 35 Γ— 66 mm format. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses FASTON-4.8 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. ### Technology inside the Fulbat FP12-2.3 Within the Fulbat catalogue, the FP12-2.3 is the 2.3 Ah model designed for this application. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Why choose Fulbat batteries French brand Fulbat is a European reference in motorcycle, garden and leisure batteries: compact ranges, clear JIS codes and a consistent quality that workshops know well. All the Fulbat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Warranty and coverage The Fulbat FP12-2.3 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. ### Usage and maintenance tips Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery. Replace all the batteries in the set at once and avoid environments continuously above 25 Β°C. ### Shipping, delivery 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 ### How is the Fulbat FP12-2.3 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How long does the Fulbat FP12-2.3 battery last? Expected lifespan of the Fulbat FP12-2.3 is 4 to 7 years in regular use (depends on technology and climate). 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 FP12-2.3 model? Dimensions (length Γ— width Γ— height) are 178Γ—35Γ—66 mm β€” also written as 178x35x66 mm β€” 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. ### What are the equivalents of the FP12-2.3 model? 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 β€” 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-09-28*