18650 battery charger,Universal Battery Charger KESHEE K1 LED Display Speedy Smart Charger for Rechargeable Li-ion Batteries 21700 20700 26650 10440 14500 16340 16650 18650

I got this charger 1 or 2 months ago and since ive had it ive noticed lots of things that would be nice to know before purchasing this charger. Okay to start out, no one really wants a 1 bay charger, unless you only need one battery for the device you are using. Through the time ive had this, it has worked very well, but there are some things that you should have in mind so you are using the charger safely.So one thing that you should be careful about is how high you set the amps. At 2 amps if you leave it for around half an hour to an hour and you go back and touch it, it will be noticeably warmer than the temperature it started at when the battery was inserted. At 1 amp after an hour or 2 it will still get a bit warmer than the temperature it started at when the battery was inserted but just because it gets only a little bit warmer than it started at doesnt mean that it cant still overheat if left on too long. I recommend leaving it at .5 amps while charging so it can be safely charged while you are asleep and leaving it at .5 amps seemed to make my battery hold a longer charge than it would if it were charged at a higher amount of amps.Another thing to really be careful about is accidentally or intentionally covering the charger up with a blanket or sweatshirt on accident(just dont cover it up with anything, but blankets and fabrics are things that should be avoided the most). If the charger has something covering it then the warm air from the charger will get stuck in the space that the charger is closed off under which will cause it to get very very hot and in some situations if the battery reaches too high of a temperature, it may have the potential to even explode but that is very rare to happen. For some reason if the charger ever has to be covered with something, make sure it is set down to .5 amps so it wont get too hot.Another thing that people should just be aware of is that the battery may slide out of the + side on the charger a little bit but might not come all the way off so you probably wont notice that the battery is not fully in the charger so you could leave your battery on the charger for a few hours and you go back because you need to use the battery and you look at the battery and you notice that it wasnt even charging so now you have to wait another few hours before you can use your battery for whatever you use them for.And i was using 18650 batteries so it might be different for other batteries but this was just what i experienced with this battery charger. I do not dislike this charger at all and for the time being, before i needed to charge more batteries at once, it worked very well for me. I would recommend this charger to someone in need of a decent 1 bay battery charger and doesnt wanna spend a lot of money.

This is a great little charger. My 21700 and 20700 batteries fit in it. I like the optional charging output modes. I typically keep it to 1A or less and it only takes a few hours to charge. Also, very compact and fits easy in the backpack.

updated review: so i have had this since January and it is now Aug, it is still going strong and charges the batteries at the proper speeds. i prefer 1amp on it as 2amp gets kind of warmorigseems to work well. being able to set the charging speed is nice.

Received a defective product, doesnt turn on when plugged in or battery inserted. Ive changed out both the usb cord and wall plug...same result....UPDATE, Received a replacement and is working perfectly. Thank You

I use this charger every day. Works well and charges quickly.

I haven’t had any issues. They charge 18650 and 20700 batteries pretty well. At least it’s not so bulky if I need to take to recharge my batteries.

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If the USB cord is not placed in here just right, it will not charge the battery. For the price, this is fine, as it gets the job done.