# Stationary UPS battery Fulbat FP6-4 6V 4Ah AGM ![Stationary UPS battery Fulbat FP6-4 6V 4Ah AGM](https://baterias.com/6517-home_default/battery-fulbat-fp6-4-6v-4ah.jpg) > Fulbat FP6-4 stationary UPS battery 6V 4Ah AGM. FP General Purpose range. Dimensions 70×47×106 mm. Long float life for UPS, alarms and standby equipment. **Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) → [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-fp6-4-6v-4ah - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FP6-4 - **MPN**: FP6-4 - **Last updated**: 2026-10-02 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT FP General Purpose | | Voltage (V) | 6 V | | Largo | 70 mm | | Ancho | 47 mm | | Alto | 106 mm | | Tecnología | AGM | | Terminal type | FASTON-4.8 | | Capacity (C20) | 4 Ah | ## Quick description **Fulbat FP6-4 6V 4Ah** 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 🔌 Voltage 6 V ⚡ Capacity 4 Ah C20 📏 Dimensions 70×47×106 mm ⚙️ Technology AGM ## Description ## Stationary battery Fulbat FP6-4 4Ah 6V 6*V* Voltage 4*Ah* Capacity The **6 V**, **4 Ah** **Fulbat FP6-4** stationary battery with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Measuring 70 × 47 × 106 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 4 Ah battery of this format. - Low self-discharge and high reliability. - Standard format for UPS and emergency systems. - AGM: faster recharging and better cycle resistance than a conventional battery. - Instant response to mains failures. ### What the Fulbat FP6-4 is for Designed for UPS, alarms, telecoms and emergency lighting, the Fulbat FP6-4 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. ### Dimensions, polarity and mounting It has external dimensions of 70 × 47 × 106 mm. 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 FP6-4 Fulbat builds the FP6-4 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### What Fulbat does differently Fulbat has manufactured in France since 1978 and specialises in motorcycles and light vehicles. Its catalogue is short and clear, covers almost the whole fleet and works only with sealed, leak-free batteries. All the Fulbat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Official warranty The Fulbat FP6-4 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 Replace all the batteries in the set at once and avoid environments continuously above 25 °C. 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 6:00 pm** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **14 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 ### Is the Fulbat FP6-4 an AGM battery and what are the benefits of AGM? Yes. The Fulbat FP6-4 is AGM (Absorbent Glass Mat): sealed lead-acid, with the electrolyte absorbed in glass fibre. It tolerates heat better and handles more cycles than a conventional battery. ### What size is this battery? Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 70×47×106 mm in length × width × height, with the terminals included in the height. ### Fulbat FP6-4 or Ritar RT645: which one to choose? Same case and same technology as the FP6-4: an alternative by size, not an official equivalent. Compared with the FP6-4 it has the same Ah and cranking power. It costs €34.20 more. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model. ## 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 · 2026-11-13*