Name: Efest Slim K2 Battery Charger
Brand: Efest
SKU: Slim-k2
Price: 6.99 USD
Availability: OutOfStock

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Description
Reviews

Efest Slim K2 2 Bay Battery Charger

18650
20700
21700

Product Highlights:

2 Bay Compact USB Charger
Single charging speed - 1A x 2
LED charging indicator
Compatible with 18650, 20700, 21700, 26650 and more
Reverse polarity protection protects if cell is entered in the wrong way

Packaging Contents:

Efest Slim K2 Battery Charger
USB Cable
User Manual

Additional Features:

Fast Charging Mode: 1.0A
Auto Detect Charging Function
Low Voltage Activation Function
Short Circuit Protection
Reverse Polarity Protection
Over Charging Protection
Piano Wire Spring Provides Smooth Sliding Action - 15000+ Tensile Test
Chromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise Charging Voltage

Specifications:

Input: DC 5V 1A

Standby Current: <20mA

Activation Current: 50mA - 100mA

1.0A CC Current: 1000mA ± 10%

Auto Recharge Voltage: 4.10V ± 0.10V

Auto Cutoff Voltage: 4.20V ± 0.05V

CV Cutoff Current: <100mA

Operation Temperature: 0°C ~ 40°C

Compatible with:

3.6V/3.7V Lithium-ion Batteries

Most Cylindrical Lithium-ion Batteries Ranging In Size From 10440 To 26650

Carl H.

Great Charger ! Thanks !

Renee C.

Very compact and lightweight. Very fast charging even when using both slots.

Janice H.

Charger is easy enough to use though the batteries also appear to have built in recharging outlet.

Patrick Stevens

Simple Works great

Kelsey Homer

Great! This is a great little charger, especially for the price. I also love how small it is and how I can plug it into a USB port. It has the same power as my old charger, but it is half the size.

Joon Choi

K2 SLIM~! So compact and portable + USB! Perfect for on-the-go emergency charges from battery bank.

Dustin Davis

Awesome! Batteries fit great and are easy to put in and out

Tara McMahan

Love it! Works great!

J O

Set and forget Everything works out of the box, not pushing the charge speed envelope but not reducing cell life either which is more important to me. Shipping was super fast in the holiday season, too

Damien

Small & sleek design This battery charge is well worth the money for the price.

Matt

All around great Small profile, easy to use and decently fast charger,works great for my Samsung 25r's!

Matthew Higgins

Best service and fast shipping!! What a great product and great price. Works like a charm and fast charging.

Michael Struck

It works It works fine only thing I couldn't find what the led indicated couldn't find anything in the manual.

paul dickison

Absolutely the best Very fast shipping great service and great charger and batteries!!!

Robert Gannon

Compact Charger Nice charger at an affordable price! Small enough to take on the go. USB input works just fine in my car. No bells. No whistles. It just charges, like it's supposed too. I use 20700 batteries and they fit perfect. The only issues I have at this point is the fact that it charges 20700 3000mah batteries very slowly. It will not charge ANY battery if the USB adapter you are using has an output of more than 2.4 amps. I have tried several. The light just blinks and it refuses to charge. Which it doesn't come with btw. But I didn't expect it too at the price I paid for it. Awesome shipping! It came a day early! I will certainly grab another one in the near future from 18650!

Jeffery Robinson

Awesome I was looking for a battery charger and I saw this Efest so I decided to purchase it ... It’s excellent in my opinion ... Charges my batteries really quick ... Shipping was insanely fast too ... Only took 1 day for me to receive it ... Highly recommend this website ... I’ll definitely purchase from them again.

Patricia S Mafull

Just what I needed I haven't had to use it yet, but it is simple enough for even a 73 year old lady to understand. Thanks

Works great Would buy again

James G

perfect perfect charger for on the go or at home

jeff eno

Efest charger Works good and as it should I'm happy. Shipping was fast!

Michael Smith

Perfect Super simple and very efficient. I use it at work every day.

Ashley Parker

My favorite This is my favorite charger. Very small, portable, and simple design. I always take this charger when I'm on my business trip!

MIKE HENDRY