# Fulbat FP12-55 · UPS battery 12V 55Ah

![Fulbat FP12-55 · UPS battery 12V 55Ah](https://bateriasonline.es/735-home_default/fulbat-fp12-55.jpg)

> Fulbat FP12-55: 55 Ah UPS battery, 257×132×200 mm, positive terminal on the left, AGM. Price on request: ask for a free quote.

**Category:** [UPS batteries](https://bateriasonline.es/en/ups-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fp12-55
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FP12-55
- **MPN**: FP12-55
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT FP General Purpose |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 55 Ah |
| Length | 257 mm |
| Width | 132 mm |
| Height | 200 mm |
| Weight | 15.7 kg |
| Polarity | Positive terminal on the left |
| Terminal type | T6 |

## Quick description

The Fulbat FP12-55 is an UPS battery with 12 V and 55 Ah, measuring 257 × 132 × 200 mm, with the positive terminal on the left.

## Description

## Who the Fulbat FP12-55 is for

The Fulbat FP12-55 replaces the original batteries in a UPS. Before ordering the FP12-55, check the terminal type and terminal orientation in your UPS.
The FP12-55 belongs to the Fulbat FULBAT FP General Purpose range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## AGM technology in the FP12-55

Inside, the FP12-55 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Fulbat FP12-55 vs FP12-60 and FP12-65H

Torn between the FP12-55 and another similar Fulbat? This is what changes:

| Model | Capacity | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|
| Fulbat FP12-55 (this one) | 55 Ah | 257 × 132 × 200 | left | 15.7 kg |
| Fulbat FP12-60 | 60 Ah | 229 × 138 × 211 | left | 16.2 kg |
| Fulbat FP12-65H | 65 Ah | 260 × 168 × 214 | left | 18.4 kg |

- Fulbat FP12-60: 5 Ah more, a different case (229 × 138 × 211 mm).
- Fulbat FP12-65H: 10 Ah more, a different case (260 × 168 × 214 mm).

## Equivalents and alternatives to the Fulbat FP12-55

No other reference in the catalogue fully matches the dimensions and polarity of the FP12-55; you will find the closest ones among our [uPS batteries](https://bateriasonline.es/en/ups-batteries).

## Fulbat FP12-55 codes and part numbers

Shops, garages and catalogues identify the FP12-55 with these codes:

| Commercial reference | FP12-55 |
|---|---|
| Terminal type | T6 |
| Not to be confused with | Fulbat FP12-4.5 (4.5 Ah), Fulbat FP12-5.4 (5.4 Ah), Fulbat FP12-5 (5.4 Ah) |

## Before ordering the FP12-55, check this

- Capacity of the FP12-55: 55 Ah; the same as your current battery or slightly more is fine.
- With the terminals facing you, the positive terminal of the FP12-55 is on the left.
- The FP12-55 needs 257 × 132 × 200 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Fulbat FP12-55

### Fulbat FP12-55 or FP12-60?

Compared with the FP12-55, the Fulbat FP12-60 has 5 Ah more. With 60 Ah, the FP12-60 runs longer between charges than the FP12-55 (55 Ah). Mind the space: the FP12-60 measures 229 × 138 × 211 mm.

### How much does the Fulbat FP12-55 weigh?

The FP12-55 weighs 15.7 kg. For reference, the Fulbat FP12-60 (60 Ah) weighs 16.2 kg.

### Which side is the positive terminal on the Fulbat FP12-55?

The FP12-55 has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

## Keep comparing: alternatives to the FP12-55

- [Other uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)

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*bateriasonline.es — Batteries and accessories · 2026-11-10*