---
product_id: 48341161
title: "FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid"
brand: "fiamm"
price: "$128.28"
currency: USD
in_stock: false
reviews_count: 8
url: https://www.desertcart.us/products/48341161-fiamm-rechargeable-lead-battery-fg21803-12v-lead-acid
store_origin: US
region: United States of America
---

# 12 Volt Power 18000mAh Capacity 6200g Weight FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid

**Brand:** fiamm
**Price:** $128.28
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power Up Your Life with FIAMM!

## Quick Answers

- **What is this?** FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid by fiamm
- **How much does it cost?** $128.28 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48341161-fiamm-rechargeable-lead-battery-fg21803-12v-lead-acid)

## Best For

- fiamm enthusiasts

## Why This Product

- Trusted fiamm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unleash Power:** Experience a robust 18000mAh capacity for all your energy needs.
- • **Compact Design:** Perfectly sized at 181x76x167mm to fit seamlessly into your projects.
- • **Dependable Voltage:** Stay charged with a reliable 12 Volt output for consistent performance.
- • **Eco-Friendly Choice:** Lead-acid technology ensures a sustainable energy solution for your devices.
- • **Heavy-Duty Reliability:** Weighing in at 6200g, this battery is built to last under demanding conditions.

## Overview

The FIAMM Rechargeable Lead Battery FG21803 is a high-capacity 12V lead-acid battery, boasting an impressive 18000mAh capacity, designed for durability and reliability in various applications. Weighing 6200 grams and measuring 181x76x167mm, it offers a compact yet powerful energy solution for both personal and professional use.

## Description

Lead-Gel Battery Fiamm FG21803 12Volt replaced Multipower MP18-12 etc. WARNING: Not suitable as a starter battery (eg BMW motorcycle, it can only be used FG21803H!)  Technical details:System: Lead acid battery (Pb)Voltage: 12 VoltCapacity: 18000mAh / 18AhEnergy: max. 216,00 WhConnection: M5 screwed connectionDimension (LxWxH): 181x76x167mmColor: blackWeight: 6,20 kgManufacturer: FiammManufacturer Part No.: FG21803

## Features

- Capacity: 18000mAh
- Voltage: 12 Volt
- System: Lead–acid battery
- Weight: 6200 gr
- Dimensions: 181x76x167mm

## Images

![FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid - Image 1](https://m.media-amazon.com/images/I/71s4gNgYddL.jpg)
![FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid - Image 2](https://m.media-amazon.com/images/I/61kIQKNtw1L.jpg)
![FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid - Image 3](https://m.media-amazon.com/images/I/61JS0R59MLL.jpg)
![FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid - Image 4](https://m.media-amazon.com/images/I/61wW57YRyEL.jpg)
![FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid - Image 5](https://m.media-amazon.com/images/I/61Ez9z1ziJL.jpg)

## Questions & Answers

**Q: is this battery ready charged**
A: The battery has a charging level about 30 %.

**Q: Can I use crocodile clips to attach things to this battery like a solar panel charger.**
A: Hello,

you can use this charger, but it will take a lot of time to charge this battery.

With best regards,

**Q: Does this battery replace the Fiamm F19-12B Ecoforce?**
A: hi, yes it's the same type of battery

**Q: Will this work on the motocaddy s1?**
A: Hello,

this battery is not cycle using. 

Better you choose a the same type like the battery, which you have used before.

With best regards,

## Customer Reviews

### ⭐⭐⭐⭐⭐ Battery
*by P***H on 10 March 2021*

Great battery, better than the one i ordered. Cheers

### ⭐⭐⭐⭐⭐ Fitted and working well.
*by C***K on 13 July 2020*

Replacement battery for ride on lawnmower. Good price point.

### ⭐⭐⭐⭐ good replacement battery for jump start
*by B***L on 26 June 2020*

it is a replacement for a battery in a car jumpstart unit and works well so far.

## Frequently Bought Together

- FIAMM Rechargeable lead battery FG21803, 12V, Lead-Acid
- Tecnoware Power Systems - 12V Charge 7.2 Ah Lead-Acid Sealed Battery, for UPS, Video Surveillance and Alarm Systems, 2.5 Inch Faston Connection, Long Lasting, No Maintenance, Bianco, Size 7.2 Ah

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**Shop now:** [https://www.desertcart.us/products/48341161-fiamm-rechargeable-lead-battery-fg21803-12v-lead-acid](https://www.desertcart.us/products/48341161-fiamm-rechargeable-lead-battery-fg21803-12v-lead-acid)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-26*