# Ritar RL21500 · UPS battery 2V 1,500Ah

![Ritar RL21500 · UPS battery 2V 1,500Ah](https://bateriasonline.es/2990-home_default/ritar-rl21500.jpg)

> Ritar RL21500: 1,500 Ah UPS battery, 355×337×342 mm, AGM. Compare sizes and equivalents; 14-day returns.

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

- **Canonical URL**: https://bateriasonline.es/en/ritar-rl21500
- **Language**: en
- **Brand**: Ritar
- **Reference**: BOL-RITAR-RL21500
- **MPN**: RL21500
- **Price**: 858,43 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Ritar |
| Range | RITAR RL |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 2 V |
| Capacity | 1500 Ah (C10) |
| Length | 355 mm |
| Width | 337 mm |
| Height | 342 mm |
| Weight | 85 kg |
| Terminal type | F10(M8) |

## Quick description

Ritar RL21500: UPS battery with 2 V and 1,500 Ah, measuring 355 × 337 × 342 mm.

## Description

## Where the Ritar RL21500 fits

The Ritar RL21500 replaces the original batteries in a UPS. The RL21500 spends most of its life on float charge, waiting for a power cut.
The RL21500 belongs to the Ritar RITAR RL range. [See all Ritar batteries](https://bateriasonline.es/en/ritar-batteries)

## Inside the RL21500: AGM technology

Inside, the RL21500 has glass fibre separators (AGM) that hold the electrolyte. The RL21500 needs a charger with an AGM mode that does not exceed 14.7 V.

## Ritar RL21500 vs RL22000 and RL21000: differences

What sets the RL21500 apart from its neighbours in the Ritar range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Ritar RL21500 (this one) | 1,500 Ah | 355 × 337 × 342 | 85 kg |
| Ritar RL22000 | 2,000 Ah | 476 × 337 × 342 | 114 kg |
| Ritar RL21000 | 1,000 Ah | 383 × 171 × 372 | 51 kg |

- Ritar RL22000: 500 Ah more, a different case (476 × 337 × 342 mm).
- Ritar RL21000: 500 Ah less, a different case (383 × 171 × 372 mm).

## Equivalents and alternatives to the Ritar RL21500

We have no other battery with exactly the dimensions and polarity of the RL21500. Browse the rest of our [uPS batteries](https://bateriasonline.es/en/ups-batteries) to compare close options.

## Part numbers and codes for the Ritar RL21500

This is how the Ritar RL21500 appears on the label and in parts catalogues:

| Commercial reference | RL21500 |
|---|---|
| Terminal type | F10(M8) |
| Not to be confused with | Ritar RL21000 (1,000 Ah), Ritar RL21200 (1,200 Ah), Ritar RL22500 (2,500 Ah) |

## What to look at before buying the RL21500

- With 1,500 Ah, the RL21500 replaces an original battery of that capacity or slightly less.
- Measure the space: the RL21500 takes up 355 × 337 × 342 mm.

## Frequently asked questions about the Ritar RL21500

### RL21500 or RL22000: which one suits me?

Compared with the RL21500, the Ritar RL22000 has 500 Ah more. With 2,000 Ah, the RL22000 runs longer between charges than the RL21500 (1,500 Ah). Mind the space: the RL22000 measures 476 × 337 × 342 mm.

### How much does the Ritar RL21500 weigh?

85 kg, with 1,500 Ah of capacity. For reference, the Ritar RL22000 (2,000 Ah) weighs 114 kg.

### 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.

## Keep comparing: alternatives to the RL21500

- [More uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [Full Ritar catalogue](https://bateriasonline.es/en/ritar-batteries)

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