# Stationary UPS battery Fulbat FP12-18 12V 18Ah AGM

![Stationary UPS battery Fulbat FP12-18 12V 18Ah AGM](https://baterias.com/6342-home_default/battery-fulbat-fp12-18-12v-18ah.jpg)

> Fulbat FP12-18 stationary UPS battery 12V 18Ah AGM. FP General Purpose range. Dimensions 181×76×167 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-fp12-18-12v-18ah
- **Language**: en-GB
- **Brand**: FULBAT
- **Reference**: BCOM-FULBAT-FP12-18
- **MPN**: FP12-18
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | FULBAT |
| Model | FULBAT FP General Purpose |
| Voltage (V) | 12 V |
| Largo | 181.5 mm |
| Ancho | 76.5 mm |
| Alto | 167.5 mm |
| Tecnología | AGM |
| Terminal type | BOLT-M8 |
| Capacity (C20) | 18 Ah |

## Quick description

**Fulbat FP12-18 12V 18Ah** 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
12 V

⚡ Capacity
18 Ah C20

📏 Dimensions
182×77×168 mm

⚙️ Technology
AGM

## Description

## Stationary battery Fulbat FP12-18 18Ah 12V

12*V* Voltage
18*Ah* Capacity

Designed for UPS, alarms, telecoms and emergency lighting, the **Fulbat FP12-18** offers **18 Ah** with AGM technology on permanent float charge. It measures 181 × 76 × 167 mm, the format sought by anyone replacing a 18 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.

### What the Fulbat FP12-18 is for

The Fulbat FP12-18 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 BOLT-M8 terminals.

### Will it fit your current battery tray?

The Fulbat FP12-18 is made in the 181 × 76 × 167 mm format. It uses BOLT-M8 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 FP12-18

Fulbat builds the FP12-18 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.

### Fulbat: the maker behind the FP12-18

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.

### Manufacturer's warranty

The Fulbat FP12-18 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.

### When you get it and how to return it

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 (−) 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 Fulbat FP12-18 battery last?

Expected lifespan of the Fulbat FP12-18 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 size is this battery?

Dimensions (length × width × height) are 182×77×168 mm — also written as 182x77x168 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.

### What are the equivalents of the FP12-18 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 — 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 — over 25 years of experience validating automotive batteries.

→ https://baterias.com/gb/technical-team

---
*baterias.com — Automotive batteries · 2026-10-04*