---
product_id: 25980827
title: "Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014)"
brand: "the flex belt"
price: "R$34"
currency: BRL
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.br/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390
store_origin: BR
region: Brazil
---

# Fast AC charging included Rechargeable controller for uninterrupted use Sleek black design fits any style Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014)

**Brand:** the flex belt
**Price:** R$34
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power your muscle toning game with sleek, rechargeable control!

## Quick Answers

- **What is this?** Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) by the flex belt
- **How much does it cost?** R$34 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390)

## Best For

- the flex belt enthusiasts

## Why This Product

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

## Key Features

- • **Power Up & Go:** Rechargeable controller ensures you never miss a session—cut the cord and stay mobile.
- • **Durable & Lightweight:** Compact 8-ounce design with robust plastic build for everyday reliability and portability.
- • **Peace of Mind Warranty:** Backed by a 2-year limited warranty—invest in your fitness with confidence.
- • **Seamless Compatibility:** Works flawlessly with Flex Belt, Flex Mini, and Flex Arms for versatile muscle toning.
- • **Plug & Play Convenience:** Includes AC charger and easy-to-follow manual for quick setup and hassle-free use.

## Overview

This Replacement Controller & Charger is designed exclusively for use with THE FLEX BELT, FLEX MINI, or FLEX ARMS (sold separately). Featuring a rechargeable battery and included AC charger, it offers a lightweight, durable, and easy-to-use solution to keep your muscle stimulation sessions uninterrupted. Packaged with an instruction manual and backed by a 2-year limited warranty, it’s the essential upgrade for your fitness tech arsenal.

## Description

THE FLEX BELT controller is for use with: THE FLEX BELT, THE FLEX MINI or THE FLEX ARMS. This is a Replacement Controller only. Includes a 2-Year Limited .

## Features

- For Use with: The Flex Belt, the flex Mini or the flex arms
- Rechargeable and easy-to-use
- Includes: rechargeable controller, AC Charger and instruction manual
- Controller/Charger only. The Flex Belt, the flex Mini or the flex arms (sold separately)
- NOTE: Check User manual on Product details before use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 5.6 x 5 x 4.7 inches |
| Package Weight | 0.27 Kilograms |
| Item Weight | 0.5 Pounds |
| Brand Name | THE FLEX BELT |
| Warranty Description | 2 Year Limited |
| Model Name | THE FLEX BELT Controller & Charger |
| Color | Black |
| Material | Plastic |
| Suggested Users | unisex-adult |
| Manufacturer | Slendertone Distribution Inc. |
| Part Number | LYSB01C3W3P3Q-SPRTSEQIP |
| Included Components | AC Charger, Instruction Manual, Rechargeable Controller |

## Images

![Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 1](https://m.media-amazon.com/images/I/41DXjJ9efML.jpg)
![Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 2](https://m.media-amazon.com/images/I/31p6mTg-DlL.jpg)
![Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 3](https://m.media-amazon.com/images/I/31RRpMSrgmL.jpg)

## Questions & Answers

**Q: What rechargeable battery brand/model fits the flex belt controller? Need exact/correct recommendations. Thanks.**
A: This battery works: Kastar Cordless Phone Battery for V Tech 89-1323-00-00 80-1323-00-00 80-0099-00-00 8900990000 27910 Vtech . The plug that hooks in to the controller will need to be slightly sanded so it has 2 round corners rather than all square corners but I replaced all my old batteries with these batteries and they work great. See link for battery for pictures.

**Q: I am needing just the piece that plugs into the wall.  Do you sell that**
A: Yes, it's available on TheFlexBelt.com and it's under Accessories, and it's called 'Replacement Charger Only'.

**Q: ICan I buy the charger separately from the controller of flex belt**
A: Yes, only on the Slendertone website (it works with Slendertone or Flex Belt).

**Q: I just need the charger for the Flex belt, where can I get one?**
A: You can buy it on the Slendertone website (they make Flex Belt) for $20.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Replacement for original
*by T***J on July 2, 2021*

This item works like a champ. I purchased to replace the original and it works very well. I get 4-5 uses from a single battery charge. That is very good.

### ⭐⭐⭐⭐⭐ Exactly as described, made by belt usable again
*by P***D on April 12, 2019*

Had a belt for years, but the charger controller stopped charging.While it is a different brand/make, it fits perfectly and my belt - once again - has life.

### ⭐⭐⭐⭐ I read reviews that said the product didn't work before ...
*by S***. on January 12, 2017*

I read reviews that said the product didn't work before I bought mine, and I was nervous to buy it. I did not have any issues with mine working at all. I made sure that I charged it fully before using it and it turned on with out any issues. I've used it about 20 times now, and I still have no issues with it.

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**Shop now:** [https://www.desertcart.com.br/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390](https://www.desertcart.com.br/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-12*