# Stationary UPS battery Fulbat FP12-5.5 12V 5.5Ah AGM ![Stationary UPS battery Fulbat FP12-5.5 12V 5.5Ah AGM](https://baterias.com/6512-home_default/battery-fulbat-fp12-5-5-12v-5-5ah.jpg) > Fulbat FP12-5.5 stationary UPS battery 12V 5.5Ah AGM. FP General Purpose range. Dimensions 151Γ—53Γ—99 mm, + terminal on the right. 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-fp12-5-5-12v-5-5ah - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FP12-5.5 - **MPN**: FP12-5.5 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT FP General Purpose | | Voltage (V) | 12 V | | Largo | 151 mm | | Ancho | 53 mm | | Alto | 99 mm | | TecnologΓ­a | AGM | | Terminal layout | Positive right | | Terminal type | FASTON-DUAL | | Capacity (C20) | 5.5 Ah | ## Quick description **Fulbat FP12-5.5 12V 5,5Ah** 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 5,5 Ah C20 πŸ“ Dimensions 151Γ—53Γ—99 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the right ## Description ## Stationary battery Fulbat FP12-5.5 5.5Ah 12V 12*V* Voltage 5.5*Ah* Capacity The **Fulbat FP12-5.5** with AGM technology is a **5.5 Ah**, **12 V** backup battery for UPS, alarms, telecoms and emergency lighting. It measures 151 Γ— 53 Γ— 99 mm and the positive terminal on the right, the format sought by anyone replacing a 5.5 Ah battery in UPS, alarm and emergency systems. - Maintenance-free for its whole service life. - Sealed and gas-free: suitable for cabinets and offices. - Long float life under permanent charge. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. ### Dimensions, polarity and mounting The Fulbat FP12-5.5 is made in the 151 Γ— 53 Γ— 99 mm format. The positive terminal on the right 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-DUAL 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. ### What the Fulbat FP12-5.5 is for Designed for UPS, alarms, telecoms and emergency lighting, the Fulbat FP12-5.5 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-DUAL terminals. ### Technology inside the Fulbat FP12-5.5 Fulbat builds the FP12-5.5 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position. 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. ### 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. We guarantee that every Fulbat arrives new, charged and with the manufacturer's full warranty. ### Official warranty The Fulbat FP12-5.5 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. ### How to make it last longer Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. 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 ### How do I change this battery step by step? 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 FP12-5.5 battery last? Expected lifespan of the Fulbat FP12-5.5 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 dimensions of the Fulbat FP12-5.5 battery? Dimensions (length Γ— width Γ— height) are 151Γ—53Γ—99 mm β€” also written as 151x53x99 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. ### Which batteries are equivalent to the Fulbat FP12-5.5? 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· 2026-09-30*