---
product_id: 106971825
title: "High Capacity 4000mAh Replacement Battery Compatible with 21.6V Battery"
brand: "reoben"
price: "S$13"
currency: SGD
in_stock: false
reviews_count: 8
url: https://www.desertcart.sg/products/106971825-high-capacity-4000mah-replacement-battery-compatible-with-21-6v-battery
store_origin: SG
region: Singapore
---

# 21.6V Power Lithium-Ion Tech 4000mAh Capacity High Capacity 4000mAh Replacement Battery Compatible with 21.6V Battery

**Brand:** reoben
**Price:** S$13
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power Up Your Life with Confidence!

## Quick Answers

- **What is this?** High Capacity 4000mAh Replacement Battery Compatible with 21.6V Battery by reoben
- **How much does it cost?** S$13 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/106971825-high-capacity-4000mah-replacement-battery-compatible-with-21-6v-battery)

## Best For

- reoben enthusiasts

## Why This Product

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

## Key Features

- • **Unleash Power:** Experience the robust 4000mAh capacity for extended usage.
- • **Quick Recharge:** Get back to full power in no time with rapid charging capabilities.
- • **Eco-Friendly Energy:** Utilizes advanced Lithium-Ion technology for sustainable performance.
- • **Reliable Performance:** Count on consistent energy delivery for all your high-demand tasks.
- • **Seamless Compatibility:** Designed to fit perfectly with your 21.6V devices.

## Overview

This high-capacity 4000mAh replacement battery is designed for optimal performance with 21.6V devices, utilizing advanced Lithium-Ion technology for reliable and eco-friendly energy solutions.

## Description

Full description not available

## Features

- Upgraded Capacity Battery Type: Lithium-Ion | Battery Voltage: 21.6V | Battery Capacity: 4000mAh

## Images

![High Capacity 4000mAh Replacement Battery Compatible with 21.6V Battery - Image 1](https://m.media-amazon.com/images/I/01RmK+J4pJL._AC_.gif)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    This was SO easy to install
  

*by J***W on Reviewed in the United States on March 27, 2019*

I bought from Dyson a refurbished vacuum, about 7 years ago. It has been the "go to" machine for daily cleanups, esp small quick touch ups, whereas the Roomba (another favorite machine) does the downstairs carpeted area. The battery from Dyson held up well, but had a marked date of 12/04 stamped on it, so when the run time plummeted, to about 15 seconds, I knew it was time to update the battery.  My first call was to Dyson service center, which is about 1.5 hour drive from here. They wanted $100 for the battery and $75 for installation. I definitely needed a second opinion. For that price ($175 total) it seemed a new machine was perhaps a better choice than trying to nurse along the old one. But I looked at a YouTube short video on the battery swap, and was emboldened by how easy it looked. Plus there were YouTube walk throughs of how to do a complete cleanout of the nooks and crannies of the DC59 machine! So I spring for this battery. It was truly a 5 minute swap out; take the old Lithium battery to BestBuy for recycling! Don't just trash it; keep it out of the landfill and you are doing a little bit to save this beleaguered Earth home. Do the cleanup per the video (which takes a bit longer, but tell yourself "Dyson was going to charge me $75  for this, and a 3 hour round trip drive" and it will be worth it. Total spent was probably 30 minutes, and some dry time for the conical filter in the center of the motor chamber. The battery has a nice feature missing from the original. The status light is blue while charging, and switches to green when fully charged. I couldn't be happier, and will volunteer to update my daughter's Dyson (a gift from us) when it is time. Part of the full service parent role, and will earmark this battery as the brand to choose!!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Practically double the battery life compared to the factory battery!
  

*by M***S on Reviewed in the United States on July 21, 2021*

So far so good. I've only had it a couple of days but I used to have to charge factory battery twice to get the whole place completely. I live in a trailer by the way. There are a couple things that are odd though. One thing is that when I put it in the charging dock that I bought from Amazon, I have to push the vacuum up for it to start charging, where with the factory battery all I had to do was simply put it in the dock and walk away. The second issue is that there's a half second delay after I pull the "trigger" before it actually activates. To me they are really a non-issue but I just figured I'd let people know about them. But it's battery life is practically double that of the factory battery and that alone would make me put up with a lot more serious issues for it to change my opinion that it is a great upgrade.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Lasted 11 months
  

*by W***E on Reviewed in the United States on December 31, 2022*

Now blinks red whenever plugged in. (yes, I made sure it wasn't hot; it's been blinking for days.)

---

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**Shop now:** [https://www.desertcart.sg/products/106971825-high-capacity-4000mah-replacement-battery-compatible-with-21-6v-battery](https://www.desertcart.sg/products/106971825-high-capacity-4000mah-replacement-battery-compatible-with-21-6v-battery)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-12*