---
product_id: 25980827
title: "Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014)"
brand: "the flex belt"
price: "€ 7.57"
currency: EUR
in_stock: false
reviews_count: 12
url: https://www.desertcart.fr/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390
store_origin: FR
region: France
---

# Fast and reliable AC charger included Rechargeable battery with 4-5 uses per charge Sleek black design for a professional look Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014)

**Brand:** the flex belt
**Price:** € 7.57
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power your core, upgrade your game.

## Quick Answers

- **What is this?** Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) by the flex belt
- **How much does it cost?** € 7.57 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/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

- • **Trusted Longevity:** Backed by a 2-year limited warranty, ensuring peace of mind with every pulse.
- • **Seamless Power Boost:** Rechargeable controller delivers up to 5 sessions per charge, keeping your routine uninterrupted.
- • **Tailored Compatibility:** Works exclusively with Flex Belt, Flex Mini, and Flex Arms—upgrade your existing system without buying new.
- • **Durability Meets Design:** Compact, lightweight, and built to last with a sleek black finish that fits your modern lifestyle.
- • **Plug & Play Convenience:** Includes AC charger and manual for effortless setup—no tech headaches, just results.

## Overview

The Flex Belt Replacement Controller & Charger is a rechargeable, easy-to-use accessory compatible with Flex Belt, Flex Mini, and Flex Arms devices. Featuring a sleek black design, it offers up to 5 uses per charge and includes an AC charger and instruction manual. Designed for durability and backed by a 2-year limited warranty, this controller lets you maintain your muscle toning routine without purchasing a full new unit.

## 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 .

Review: Easy peasy - This product is a great replacement part. I love the ease of purchase and the fact an entire Flex Belt unit purchase is not necessary. Thank you Flex Belt. The belt is an awesome tool for pain relief and tightening ab muscles. I love mine. Have used this for well over 2 years and still going strong with correct maintenance and daily use.
Review: Replacement for original - 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.

## 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 |
|---------------|-------|
| ASIN | B01C3W3P3Q |
| Brand Name | THE FLEX BELT |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (428) |
| Date First Available | February 22, 2016 |
| Included Components | AC Charger, Instruction Manual, Rechargeable Controller |
| Item Package Dimensions L x W x H | 5.6 x 5 x 4.7 inches |
| Item Weight | 0.5 Pounds |
| Manufacturer | Slendertone Distribution Inc. |
| Material | Plastic |
| Model Name | THE FLEX BELT Controller & Charger |
| Package Weight | 0.27 Kilograms |
| Part Number | LYSB01C3W3P3Q-SPRTSEQIP |
| Suggested Users | unisex-adult |
| Warranty Description | 2 Year Limited |

## 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

### ⭐⭐⭐⭐⭐ Easy peasy
*by A***E on May 6, 2019*

This product is a great replacement part. I love the ease of purchase and the fact an entire Flex Belt unit purchase is not necessary. Thank you Flex Belt. The belt is an awesome tool for pain relief and tightening ab muscles. I love mine. Have used this for well over 2 years and still going strong with correct maintenance and daily use.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐ 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.fr/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390](https://www.desertcart.fr/products/25980827-replacement-controller-and-charger-flex-belt-sold-separately-black-0390)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-07*