---
product_id: 393960243
title: "AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700"
brand: "af trading"
price: "€ 40.24"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.nl/products/393960243-af-trading-efest-slim-k4-cherger-lithium-battery-charger-li
store_origin: NL
region: Netherlands
---

# Charges up to 4 batteries simultaneously Compatible with 14 lithium battery sizes Built-in overcharge & reverse polarity protection AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700

**Brand:** af trading
**Price:** € 40.24
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up smarter, faster, safer — never miss a charge!

## Quick Answers

- **What is this?** AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 by af trading
- **How much does it cost?** € 40.24 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/393960243-af-trading-efest-slim-k4-cherger-lithium-battery-charger-li)

## Best For

- af trading enthusiasts

## Why This Product

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

## Key Features

- • **Quad Power Boost:** Charge 4 lithium batteries at once, no waiting.
- • **Smart Safety Shield:** Automatic overcharge and reverse polarity protection keeps your batteries safe.
- • **Compact & Travel-Ready:** Slim design with a 15cm USB cable fits perfectly in any workspace or bag.
- • **Real-Time Charge Monitoring:** Stay informed with clear charging status indicators.
- • **Universal Battery Compatibility:** Supports 14 popular lithium battery sizes for ultimate versatility.

## Overview

The EFEST Slim K4 Charger is a certified lithium battery charger compatible with 14 different battery sizes, capable of charging up to 4 batteries simultaneously. It features real-time charge monitoring, automatic overcharge protection, and reverse polarity safety, all packed in a sleek, compact design with a convenient 15cm USB cable.

## Description

AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700

## Features

- Original EFEST battery charger directly from the factory - 100% certified
- Suitable for lithium batteries 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700
- The K4 charger allows you to monitor the charging status - capable of charging up to 4 batteries
- Safe charging mode - Automatic overcharge protection function - Reverse polarity protection
- Box contents: 1 x slim K4.1 USB cable charger, user manual
- Cable Length: 15

## Product Details

- **Brand:** AF TRADING
- **Colour:** Black
- **Item weight:** 0.19 Kilograms
- **Output voltage:** 4.2 Volts
- **Specification met:** CE

## Images

![AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 - Image 1](https://m.media-amazon.com/images/I/71u31VhLiDL.jpg)
![AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 - Image 2](https://m.media-amazon.com/images/I/71twVUhh5YL.jpg)
![AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 - Image 3](https://m.media-amazon.com/images/I/61sn8LmG-CL.jpg)
![AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 - Image 4](https://m.media-amazon.com/images/I/714MCBHhJkL.jpg)
![AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700 - Image 5](https://m.media-amazon.com/images/I/61+iH37MxbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent charger
*by L***Y on 31 March 2025*

Excellent charger perfect size does what it is supposed to do and does it well.

### ⭐⭐⭐⭐⭐ Charger
*by D***E on 26 April 2024*

Nice and small 👌 and compact.

### ⭐⭐⭐⭐ Good
*by A***A on 2 July 2023*

Good

## Frequently Bought Together

- AF TRADING EFEST SLIM K4 CHERGER Lithium Battery Charger LI-Ion 10400/14500/16340/17340/18350/18490/18500/18650/26500/26650/20700/21700
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**Shop now:** [https://www.desertcart.nl/products/393960243-af-trading-efest-slim-k4-cherger-lithium-battery-charger-li](https://www.desertcart.nl/products/393960243-af-trading-efest-slim-k4-cherger-lithium-battery-charger-li)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-16*