# Fulbat FP12-18 · UPS battery 12V 18Ah

![Fulbat FP12-18 · UPS battery 12V 18Ah](https://bateriasonline.es/692-home_default/fulbat-fp12-18.jpg)

> Fulbat FP12-18: 18 Ah UPS battery, 181.5×76.5×167.5 mm, AGM. Equivalent to Long WP18-12NSHR and Long WP18-12SHR. 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-fp12-18
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FP12-18
- **MPN**: FP12-18
- **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 | 18 Ah |
| Length | 181.5 mm |
| Width | 76.5 mm |
| Height | 167.5 mm |
| Weight | 5.35 kg |
| Terminal layout | 2 |
| Terminal type | T12 |

## Quick description

Fulbat FP12-18: UPS battery with 12 V and 18 Ah, measuring 181.5 × 76.5 × 167.5 mm.

## Description

## Who the Fulbat FP12-18 is for

The Fulbat FP12-18 replaces the original batteries in a UPS. Before ordering the FP12-18, check the terminal type and terminal orientation in your UPS.
The FP12-18 belongs to the Fulbat FULBAT FP General Purpose range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## AGM technology in the FP12-18

Inside, the FP12-18 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Fulbat FP12-18 vs FP12-20 and FP12-24H: differences

The real differences between the FP12-18 and the closest Fulbat models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Fulbat FP12-18 (this one) | 18 Ah | 181.5 × 76.5 × 167.5 | 5.35 kg |
| Fulbat FP12-20 | 20 Ah | 181.5 × 77 × 167.5 | 5.65 kg |
| Fulbat FP12-24H | 24 Ah | 164 × 125 × 174 | 8.45 kg |

- Fulbat FP12-20: 2 Ah more, the same dimensions.
- Fulbat FP12-24H: 6 Ah more, a different case (164 × 125 × 174 mm).

## Equivalents and alternatives to the Fulbat FP12-18

Other AGM batteries that fit the FP12-18's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long WP18-12NSHR | AGM | 18 Ah | 181 × 76 × 167 |
| Long WP18-12SHR | AGM | 18 Ah | 181 × 76 × 167 |
| Long WPL18-12SHR | AGM | 18 Ah | 181 × 76 × 167 |
| Ritar RT12180 | AGM | 18 Ah | 181 × 77 × 167 |
| Q-Battery 12LS-18 | AGM | 18 Ah | 181 × 77 × 167 |
| Long WPS17-12 | AGM | 17 Ah | 181 × 76 × 167 |

## Part numbers and codes for the Fulbat FP12-18

Shops, garages and catalogues identify the FP12-18 with these codes:

| Commercial reference | FP12-18 |
|---|---|
| Terminal type | T12 |
| Not to be confused with | Fulbat FP12-12 (12 Ah) |

## Check this before ordering the Fulbat FP12-18

- Your current battery should say about 18 Ah; a little more is also fine.
- The FP12-18 needs 181.5 × 76.5 × 167.5 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Fulbat FP12-18

### FP12-18 or FP12-20: which one suits me?

Compared with the FP12-18, the Fulbat FP12-20 has 2 Ah more. With 20 Ah, the FP12-20 runs longer between charges than the FP12-18 (18 Ah). Both measure 181.5 × 76.5 × 167.5 mm, so they fit the same tray.

### How much does the Fulbat FP12-18 weigh?

5.35 kg, with 18 Ah of capacity. For reference, the Fulbat FP12-20 (20 Ah) weighs 5.65 kg.

### Which battery is equivalent to the Fulbat FP12-18?

Only other AGM batteries with its dimensions and polarity: Long WP18-12NSHR, Long WP18-12SHR and Long WPL18-12SHR. Neither an EFB nor a conventional battery replaces the FP12-18.

### How often are UPS batteries replaced?

Every 3 to 5 years, or sooner if the unit warns of low battery or the runtime has dropped. Heat in the cabinet shortens their life a lot.

## More batteries to compare with the FP12-18

- [More uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Long WP18-12NSHR](https://bateriasonline.es/en/long-wp18-12nshr) · 18 Ah, 181×76×167 mm
- [Long WP18-12SHR](https://bateriasonline.es/en/long-wp18-12shr) · 18 Ah, 181×76×167 mm

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