# Long WP4.5-12 · UPS battery 12V 4.5Ah

![Long WP4.5-12 · UPS battery 12V 4.5Ah](https://bateriasonline.es/912-home_default/long-wp4-5-12.jpg)

> Long WP4.5-12: 4.5 Ah UPS battery, 90×70×107 mm, AGM. Equivalent to Fulbat FP12-4.5 and Ritar RT1245. Price on request: ask for a free quote.

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

- **Canonical URL**: https://bateriasonline.es/en/long-wp4-5-12
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-WP4.5-12
- **MPN**: WP4.5-12
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | WP Series |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 4.5 Ah |
| Length | 90 mm |
| Width | 70 mm |
| Height | 107 mm |
| Weight | 1.62 kg |

## Quick description

Long WP4.5-12: UPS battery with 12 V and 4.5 Ah, measuring 90 × 70 × 107 mm.

## Description

## The Long WP4.5-12 at a glance

The Long WP4.5-12 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. The WP4.5-12 spends most of its life on float charge, waiting for a power cut.
The WP4.5-12 belongs to the Long WP Series range. [See all Long batteries](https://bateriasonline.es/en/long-batteries)

## What it means that the WP4.5-12 is AGM

The WP4.5-12 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the WP4.5-12 can be fitted in the boot or under a seat with no risk of spills.

## Long WP4.5-12 vs WP5-12 and WP5-12SHR: which one to choose?

What sets the WP4.5-12 apart from its neighbours in the Long range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long WP4.5-12 (this one) | 4.5 Ah | 90 × 70 × 107 | 1.62 kg |
| Long WP5-12 | 5 Ah | 90 × 70 × 107 | 1.9 kg |
| Long WP5-12SHR | 5 Ah | 90 × 70 × 107 | 1.93 kg |

- Long WP5-12: 0.5 Ah more, the same dimensions.
- Long WP5-12SHR: 0.5 Ah more, the same dimensions.

## Equivalents and alternatives to the Long WP4.5-12

As the WP4.5-12 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) |
|---|---|---|---|
| Fulbat FP12-4.5 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Ritar RT1245 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Q-Battery 12LS-4.5 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Ritar RT1250 | AGM | 5 Ah | 90 × 70 × 107 |
| Fulbat FP12-5.4 | AGM | 5.4 Ah | 90 × 70 × 107 |
| Long WP5-12 | AGM | 5 Ah | 90 × 70 × 107 |

## Long WP4.5-12 codes and part numbers

Look for any of these WP4.5-12 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | WP4.5-12 |
|---|---|
| Not to be confused with | Long WP5-12 (5 Ah), Long WP40-12 (40 Ah), Long WP45-12N (45 Ah) |

## What to look at before buying the WP4.5-12

- With 4.5 Ah, the WP4.5-12 replaces an original battery of that capacity or slightly less.
- The WP4.5-12 needs 90 × 70 × 107 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Long WP4.5-12

### Long WP4.5-12 or WP5-12?

Compared with the WP4.5-12, the Long WP5-12 has 0.5 Ah more. With 5 Ah, the WP5-12 runs longer between charges than the WP4.5-12 (4.5 Ah). Both measure 90 × 70 × 107 mm, so they fit the same tray.

### How much does the Long WP4.5-12 weigh?

The WP4.5-12 weighs 1.62 kg. For reference, the Long WP5-12 (5 Ah) weighs 1.9 kg.

### Which battery is equivalent to the Long WP4.5-12?

Only other AGM batteries with its dimensions and polarity: Fulbat FP12-4.5, Ritar RT1245 and Q-Battery 12LS-4.5. Neither an EFB nor a conventional battery replaces the WP4.5-12.

### Which charger does the Long WP4.5-12 need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## Keep comparing: alternatives to the WP4.5-12

- [All uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [The whole Long range](https://bateriasonline.es/en/long-batteries)
- [Fulbat FP12-4.5](https://bateriasonline.es/en/fulbat-fp12-4-5) · 4.5 Ah, 90×70×107 mm
- [Ritar RT1245](https://bateriasonline.es/en/ritar-rt1245) · 4.5 Ah, 90×70×107 mm

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