# Fulbat FP12-5.5 · UPS battery 12V 5.5Ah

![Fulbat FP12-5.5 · UPS battery 12V 5.5Ah](https://bateriasonline.es/678-home_default/fulbat-fp12-5-5.jpg)

> Fulbat FP12-5.5: 5.5 Ah UPS battery, 151×53×99 mm, AGM. Equivalent to Long WP1224W and Fulbat FP12-5. Ask for a no-obligation quote.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fp12-5-5
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FP12-5.5
- **MPN**: FP12-5.5
- **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 | 5.5 Ah |
| Length | 151 mm |
| Width | 53 mm |
| Height | 99 mm |
| Weight | 1.73 kg |
| Terminal layout | 4 |
| Terminal type | T2 + T1 |

## Quick description

The Fulbat FP12-5.5 is an UPS battery with 12 V and 5.5 Ah, measuring 151 × 53 × 99 mm.

## Description

## Where the Fulbat FP12-5.5 fits

The Fulbat FP12-5.5 is a VRLA AGM battery for UPS and uninterruptible power systems: it stays charged for years waiting for an outage and delivers the energy instantly when it comes. Before ordering the FP12-5.5, check the terminal type and terminal orientation in your UPS.
The FP12-5.5 belongs to the Fulbat FULBAT FP General Purpose range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat FP12-5.5

As the FP12-5.5 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long WP1224W | AGM | 6 Ah | 151 × 51 × 101 |
| Fulbat FP12-5 | AGM | 5.4 Ah | 151 × 53 × 99 |

## Fulbat FP12-5.5 vs FP12-5 and FP12-7.2FR

How the FP12-5.5 compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Fulbat FP12-5.5 (this one) | 5.5 Ah | 151 × 53 × 99 | 1.73 kg |
| Fulbat FP12-5 | 5.4 Ah | 151 × 53 × 99 | 1.75 kg |
| Fulbat FP12-7.2FR | 7.2 Ah | 151 × 65 × 99.5 | 1.97 kg |

- Fulbat FP12-5: 0.10 Ah less, the same dimensions.
- Fulbat FP12-7.2FR: 1.7 Ah more, a different case (151 × 65 × 99.5 mm).

## Inside the FP12-5.5: AGM technology

The FP12-5.5 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## Check this before ordering the Fulbat FP12-5.5

- The FP12-5.5 needs 151 × 53 × 99 mm of space: measure it with the hold-down clamp in place.
- Capacity of the FP12-5.5: 5.5 Ah; the same as your current battery or slightly more is fine.

## Fulbat FP12-5.5 codes and part numbers

The FP12-5.5 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | FP12-5.5 |
|---|---|
| Terminal type | T2 + T1 |
| Not to be confused with | Fulbat FP12-4.5 (4.5 Ah, positive terminal on the left), Fulbat FP12-5.4 (5.4 Ah, positive terminal on the left), Fulbat FP12-5 (5.4 Ah) |

## Frequently asked questions about the Fulbat FP12-5.5

### Fulbat FP12-5.5 or FP12-5?

Compared with the FP12-5.5, the Fulbat FP12-5 has 0.10 Ah less. With 5.5 Ah, the FP12-5.5 runs longer between charges than the FP12-5 (5.4 Ah). Both measure 151 × 53 × 99 mm, so they fit the same tray.

### How much does the Fulbat FP12-5.5 weigh?

The FP12-5.5 weighs 1.73 kg. For reference, the Fulbat FP12-5 (5.4 Ah) weighs 1.75 kg.

### Which battery is equivalent to the Fulbat FP12-5.5?

Only other AGM batteries with its dimensions and polarity: Long WP1224W and Fulbat FP12-5. Neither an EFB nor a conventional battery replaces the FP12-5.5.

## More batteries to compare with the FP12-5.5

- [All uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Long WP1224W](https://bateriasonline.es/en/long-wp1224w) · 6 Ah, 151×51×101 mm
- [Fulbat FP12-5](https://bateriasonline.es/en/fulbat-fp12-5) · 5.4 Ah, 151×53×99 mm

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