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
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
JS
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
Not bad
Only issue is the cord not being as long as I hoped
Daniel bahr
Works good
Charges great.
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18650