# Ritar RT1245 · UPS battery 12V 4.5Ah

![Ritar RT1245 · UPS battery 12V 4.5Ah](https://bateriasonline.es/3039-home_default/ritar-rt1245.jpg)

> Ritar RT1245: 4.5 Ah UPS battery, 90×70×107 mm, AGM. Equivalent to Fulbat FP12-4.5 and Long WP4.5-12.

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

- **Canonical URL**: https://bateriasonline.es/en/ritar-rt1245
- **Language**: en
- **Brand**: Ritar
- **Reference**: BOL-RITAR-RT1245
- **MPN**: RT1245
- **Price**: 30,48 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Ritar |
| Range | RITAR RT |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 4.5 Ah |
| Length | 90 mm |
| Width | 70 mm |
| Height | 107 mm |
| Weight | 1.3 kg |
| Terminal type | F1/F2 |

## Quick description

Ritar RT1245: UPS battery with 12 V and 4.5 Ah, measuring 90 × 70 × 107 mm.

## Description

## The Ritar RT1245 at a glance

The Ritar RT1245 replaces the original batteries in a UPS. Before ordering the RT1245, check the terminal type and terminal orientation in your UPS.
The RT1245 belongs to the Ritar RITAR RT range. [See all Ritar batteries](https://bateriasonline.es/en/ritar-batteries)

## AGM technology in the RT1245

Inside, the RT1245 has glass fibre separators (AGM) that hold the electrolyte. The RT1245 needs a charger with an AGM mode that does not exceed 14.7 V.

## Ritar RT1245 vs RT1250 and RT1232: differences

What sets the RT1245 apart from its neighbours in the Ritar range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Ritar RT1245 (this one) | 4.5 Ah | 90 × 70 × 107 | 1.3 kg |
| Ritar RT1250 | 5 Ah | 90 × 70 × 107 | 1.35 kg |
| Ritar RT1232 | 3.2 Ah | 134 × 67 × 67 | 1.25 kg |

- Ritar RT1250: 0.5 Ah more, the same dimensions.
- Ritar RT1232: 1.30 Ah less, a different case (134 × 67 × 67 mm).

## Equivalents and alternatives to the Ritar RT1245

As the RT1245 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 |
| Long WP4.5-12 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Q-Battery 12LS-4.5 | AGM | 4.5 Ah | 90 × 70 × 107 |
| Long WP5-12 | AGM | 5 Ah | 90 × 70 × 107 |
| Long WP5-12SHR | AGM | 5 Ah | 90 × 70 × 107 |
| Long WPS4-12 | AGM | 4 Ah | 90 × 70 × 107 |

## Ritar RT1245 codes and part numbers

This is how the Ritar RT1245 appears on the label and in parts catalogues:

| Commercial reference | RT1245 |
|---|---|
| Terminal type | F1/F2 |
| Not to be confused with | Ritar RT1245S (4.5 Ah) |

## Before ordering the RT1245, check this

- With 4.5 Ah, the RT1245 replaces an original battery of that capacity or slightly less.
- The RT1245 needs 90 × 70 × 107 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Ritar RT1245

### Ritar RT1245 or RT1250?

Compared with the RT1245, the Ritar RT1250 has 0.5 Ah more. With 5 Ah, the RT1250 runs longer between charges than the RT1245 (4.5 Ah). Both measure 90 × 70 × 107 mm, so they fit the same tray.

### How much does the Ritar RT1245 weigh?

The RT1245 weighs 1.3 kg. For reference, the Ritar RT1250 (5 Ah) weighs 1.35 kg.

### Which battery is equivalent to the Ritar RT1245?

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

## More batteries to compare with the RT1245

- [More uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [More Ritar models](https://bateriasonline.es/en/ritar-batteries)
- [Fulbat FP12-4.5](https://bateriasonline.es/en/fulbat-fp12-4-5) · 4.5 Ah, 90×70×107 mm
- [Long WP4.5-12](https://bateriasonline.es/en/long-wp4-5-12) · 4.5 Ah, 90×70×107 mm

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