# Long WP4B-5 · UPS battery 12V 2.3Ah

![Long WP4B-5 · UPS battery 12V 2.3Ah](https://bateriasonline.es/918-home_default/long-wp4b-5.jpg)

> Long WP4B-5: 2.3 Ah UPS battery, 113×38×85.5 mm, AGM. 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-wp4b-5
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-WP4B-5
- **MPN**: WP4B-5
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | Starting Series |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 2.3 Ah |
| Length | 113 mm |
| Width | 38 mm |
| Height | 85.5 mm |
| Weight | 1.12 kg |

## Quick description

The Long WP4B-5 is an UPS battery with 12 V and 2.3 Ah, measuring 113 × 38 × 85.5 mm.

## Description

## Where the Long WP4B-5 fits

The Long WP4B-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 WP4B-5, check the terminal type and terminal orientation in your UPS.
The WP4B-5 belongs to the Long Starting Series range. [More Long batteries](https://bateriasonline.es/en/long-batteries)

## What it means that the WP4B-5 is AGM

The WP4B-5 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the WP4B-5 can be fitted in the boot or under a seat with no risk of spills.

## Long WP4B-5 vs WP2-12 and WP1250: which one to choose?

How the WP4B-5 compares with Long batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long WP4B-5 (this one) | 2.3 Ah | 113 × 38 × 85.5 | 1.12 kg |
| Long WP2-12 | 2 Ah | 150 × 20 × 90 | 0.73 kg |
| Long WP1250 | 2 Ah | 143 × 23 × 64 | 0.65 kg |

- Long WP2-12: 0.30 Ah less, a different case (150 × 20 × 90 mm).
- Long WP1250: 0.30 Ah less, a different case (143 × 23 × 64 mm).

## Equivalents and alternatives to the Long WP4B-5

No other reference in the catalogue fully matches the dimensions and polarity of the WP4B-5; you will find the closest ones among our [uPS batteries](https://bateriasonline.es/en/ups-batteries).

## Before ordering the WP4B-5, check this

- Capacity of the WP4B-5: 2.3 Ah; the same as your current battery or slightly more is fine.
- Length, width and height of the WP4B-5: 113 × 38 × 85.5 mm.

## Frequently asked questions about the Long WP4B-5

### Long WP4B-5 or WP2-12?

Compared with the WP4B-5, the Long WP2-12 has 0.30 Ah less. With 2.3 Ah, the WP4B-5 runs longer between charges than the WP2-12 (2 Ah). Mind the space: the WP2-12 measures 150 × 20 × 90 mm.

### How much does the Long WP4B-5 weigh?

The WP4B-5 weighs 1.12 kg. For reference, the Long WP2-12 (2 Ah) weighs 0.73 kg.

### Which charger does the Long WP4B-5 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.

## Other options if you are unsure about the WP4B-5

- [All uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [More Long models](https://bateriasonline.es/en/long-batteries)

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