# Fulbat FP12-2.3 · UPS battery 12V 2.3Ah

![Fulbat FP12-2.3 · UPS battery 12V 2.3Ah](https://bateriasonline.es/647-home_default/fulbat-fp12-2-3.jpg)

> Fulbat FP12-2.3: 2.3 Ah UPS battery, 178×35×66 mm, positive terminal on the left, AGM. Equivalent to Long WPS2.3-12 and Long WP2.3-12.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fp12-2-3
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FP12-2.3
- **MPN**: FP12-2.3
- **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 | 2.3 Ah |
| Length | 178 mm |
| Width | 35 mm |
| Height | 66 mm |
| Weight | 0.96 kg |
| Polarity | Positive terminal on the left |
| Terminal type | T1 |

## Quick description

Fulbat FP12-2.3: UPS battery with 12 V and 2.3 Ah, measuring 178 × 35 × 66 mm, with the positive terminal on the left.

## Description

## Where the Fulbat FP12-2.3 fits

The Fulbat FP12-2.3 replaces the original batteries in a UPS. Check dimensions, terminal type (F1 or F2) and capacity so it fits the unit.
The FP12-2.3 belongs to the Fulbat FULBAT FP General Purpose range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## What it means that the FP12-2.3 is AGM

Inside, the FP12-2.3 has glass fibre separators (AGM) that hold the electrolyte. The FP12-2.3 needs a charger with an AGM mode that does not exceed 14.7 V.

## Fulbat FP12-2.3 vs FP12-2.6 and FP12-2.2: differences

The real differences between the FP12-2.3 and the closest Fulbat models:

| Model | Capacity | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|
| Fulbat FP12-2.3 (this one) | 2.3 Ah | 178 × 35 × 66 | left | 0.96 kg |
| Fulbat FP12-2.6 | 2.6 Ah | 178 × 35 × 66 | – | 0.91 kg |
| Fulbat FP12-2.2 | 2.2 Ah | 70.5 × 47.5 × 103 | left | 0.78 kg |

- Fulbat FP12-2.6: 0.30 Ah more, the same dimensions.
- Fulbat FP12-2.2: 0.10 Ah less, a different case (70.5 × 47.5 × 103 mm).

## Equivalents and alternatives to the Fulbat FP12-2.3

As the FP12-2.3 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 WPS2.3-12 | AGM | 2.3 Ah | 178 × 34.5 × 66 |
| Long WP2.3-12 | AGM | 2.3 Ah | 178 × 34 × 66 |
| Ritar RT1223 | AGM | 2.3 Ah | 178 × 35 × 67 |
| Long WP2.2-12 | AGM | 2.2 Ah | 178 × 34 × 66 |
| Long WP2.6-12 | AGM | 2.6 Ah | 178 × 34.5 × 66 |
| Fulbat FP12-2.3FR | AGM | 2.3 Ah | 178 × 35 × 66 |

## Fulbat FP12-2.3 codes and part numbers

This is how the Fulbat FP12-2.3 appears on the label and in parts catalogues:

| Commercial reference | FP12-2.3 |
|---|---|
| Terminal type | T1 |
| Not to be confused with | Fulbat FP12-2.2 (2.2 Ah), Fulbat FP12-2.3C (2.3 Ah), Fulbat FP12-2.6 (2.6 Ah) |

## What to look at before buying the FP12-2.3

- Capacity of the FP12-2.3: 2.3 Ah; the same as your current battery or slightly more is fine.
- With the terminals facing you, the positive terminal of the FP12-2.3 is on the left.
- Length, width and height of the FP12-2.3: 178 × 35 × 66 mm.

## Frequently asked questions about the Fulbat FP12-2.3

### Fulbat FP12-2.3 or FP12-2.6?

Compared with the FP12-2.3, the Fulbat FP12-2.6 has 0.30 Ah more. With 2.6 Ah, the FP12-2.6 runs longer between charges than the FP12-2.3 (2.3 Ah). Both measure 178 × 35 × 66 mm, so they fit the same tray.

### How much does the Fulbat FP12-2.3 weigh?

The FP12-2.3 weighs 0.96 kg. For reference, the Fulbat FP12-2.6 (2.6 Ah) weighs 0.91 kg.

### Which battery is equivalent to the Fulbat FP12-2.3?

Only other AGM batteries with its dimensions and polarity: Long WPS2.3-12, Long WP2.3-12 and Ritar RT1223. Neither an EFB nor a conventional battery replaces the FP12-2.3.

### Which side is the positive terminal on the Fulbat FP12-2.3?

The FP12-2.3 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 FP12-2.3

- [Other uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)
- [Long WPS2.3-12](https://bateriasonline.es/en/long-wps2-3-12) · 2.3 Ah, 178×34.5×66 mm
- [Long WP2.3-12](https://bateriasonline.es/en/long-wp2-3-12) · 2.3 Ah, 178×34×66 mm

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