---
product_id: 49152557
title: "SLIM K2 Intelligent Charger"
brand: "efest"
price: "S$35"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/49152557-slim-k2-intelligent-charger
store_origin: SG
region: Singapore
---

# 1A Fast Charging Dual Slot Charging Safety Protections SLIM K2 Intelligent Charger

**Brand:** efest
**Price:** S$35
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Life with Efest!

## Quick Answers

- **What is this?** SLIM K2 Intelligent Charger by efest
- **How much does it cost?** S$35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/49152557-slim-k2-intelligent-charger)

## Best For

- efest enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Sleek design that fits in your pocket or bag effortlessly.
- • **LED Life Indicator:** Stay informed with a battery life LED indicator light.
- • **Safety First, Always:** Equipped with over-current, over-voltage, and short-circuit protection.
- • **Universal Compatibility:** Compatible with a wide range of battery sizes for all your needs.
- • **Charge Smart, Live Smart:** Intelligent dual-slot design for efficient charging.

## Overview

The Efest SLIM K2 Intelligent Charger is a versatile and compact charging solution designed for a wide range of battery sizes. With dual slots for independent monitoring, safety features, and a sleek design, it ensures your devices are always powered up and ready to go.

## Description

EfestSLIM K2 Intelligent Charger

## Features

- Compatible with: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 26500, 26650
- Portable Design with Quality Piano Strings - 15,000+ Tensile Test
- Features over-current, over-voltage, short-circuit, and reverse polarity protection
- Battery Life LED Indicator Light
- Dual Slot 5V/1A Micro USB Charger Each Slot monitors independently

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Current Rating | 1 Amps |
| Input Voltage | 240 Volts |
| Output Voltage | 5 Volts |
| Item Dimensions D x W x H | 0.04"D x 0.04"W x 0.04"H |
| Color | Black |

## Product Details

- **Brand:** Efest
- **Color:** Black
- **Product Dimensions:** 0.04"D x 0.04"W x 0.04"H
- **Output Voltage:** 5 Volts
- **Input Voltage:** 240 Volts

## Images

![SLIM K2 Intelligent Charger - Image 1](https://m.media-amazon.com/images/I/71z-O4nrHoL.jpg)

## Questions & Answers

**Q: Why is the charger blinking?**
A: Probably defective. Mines doesn’t blink.

**Q: Will this disconnect if the batteries are full ?**
A: It shows a different light if batteries are fully charged so I assume yes

**Q: What color does it change to when the batteries are fully charged?**
A: Depending on the battery, the light above the section that the battery is in will turn blue or both lights will turn blue when the battery is fully charged.  I haven’t put 2 batteries in to charge at the same time. I did once and neither light turned blue. I just charge 1 battery at a time.

**Q: Can you charge one battery at a time?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ For a cheap and portable battery charger – it is good
*by E***E on June 19, 2023*

I own four battery chargers atm. Three are Nightcores and one is this particular E fest.Obviously, the Nightcore chargers are built so much better and offer a better variety of batteries that can be charged. I did, however, have an issue with the Nightcore new i2 charger in which it only would charge one battery at a time. That is why I grabbed this E fest because I didn’t want to lug around a huge charger with me. This is actually the second E Fest charger I have owned. The first one lasted me about two years and finally the micro USB port broke..I needed a quick replacement and was going to get another Nightcore, but decided to look into this oneApparently, I have issues with dual battery chargers. All of the other ones I have are four batteries and they have never had issues.The first Efest was just like this one but had a micro USB and took almost 5 hours to charge two 18650 batteries- but I really liked the portability of this charger-so I thought I would just grab a new one since it was really cheap. I didn’t even realize that they had upgraded from micro USB to USB-C .What a difference with the USB-C. It doesn’t charge insanely fast, but in about two -three hours I can get my batteries fully charged. No, it isn’t the fanciest charger. It is super basic and I wouldn’t suggest it if you use it for charging 18650 vape batteries that would go in a mech mod (i’m just OCD about mechanicals, which batteries I use in them, and how they are charged).Unfortunately, you can’t put rechargeable AA or AAA rechargeable batteries in it but 18650s, 18350s, 21700s, and 20700s all can be charged with this (along with a few other types). I will also add that if I plug this straight into a power strip that has USB power inputs it seems to charge faster than an adapter. It could just be me thinking that it charges faster directly in a usb port,It isn’t like an iPhone or other device that can be charged faster with a more powerful USB adapter but seems to charge even faster direct.It’s really about the portability for me with this particular charger.It isn’t fancy. It doesn’t show you your battery levels. It basically turns blue when batteries are fully charged.I will be totally honest- it is a little cheaply made. It works great as a back up and portable charger. It works great if you need a tiny charger-it does the trick. And for such a low price I obviously liked it enough to purchase it a second time. It isn’t my main charger but it’s definitely my work charger.

### ⭐⭐⭐⭐⭐ Updated Version is better
*by J***. on April 22, 2024*

A few years ago I bought this charger to recharge my batteries I use for vaping. The older one had the Micro USB which I had to find the cable for every time. Fast forward and I thought I lost the old one and bout the new one and I didn't realize that it now has USB-C which saves the headache of finding the correct cable. I does the job and still satisfied.

### ⭐⭐⭐⭐⭐ Works perfectly.
*by A***R on November 9, 2024*

Works perfectly.

## Frequently Bought Together

- Efest SLIM K2 Intelligent Charger
- Efest LUSH Q4 Intelligent LED Battery Charger for 20700 / 18650 / 26650 / 26500 / 18500 / 18350 / 17340 / 16340 / 14500 / 10440

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**Shop now:** [https://www.desertcart.sg/products/49152557-slim-k2-intelligent-charger](https://www.desertcart.sg/products/49152557-slim-k2-intelligent-charger)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-25*