18650 Battery Charger 4-slot Universal Intelligent Battery Charger 3.7v Li-ion Rechargeable Battery Chargers for 26650 18350 17670 18700 21700 20700 RCR123 Lithium-ion Batteries

I bought this as a replacement for a similar charger I had a few years ago from Amazon, and this one really really missed the Mark.It’s got no vent holes so gets incredibly hot when charging, which seems incredibly unsafe.It constantly makes a high pitched sound like a mosquito that gets piercingly loud when the batteries are charged, and within a month, it’s stopped charging all the batteries properly. Avoid!

Good value. Easy to use. Red when charging, green when full.

So it charges the batteries very very slowly. Its that slow I used another set of batteries before the other had even charged. My main issue (and why I won't be using it) its the buzzing sound coming from it when you put in 4 batteries. It's loud enough to hear when you walk past. Nope will be returning for a refund. Its obviously not up for the job.

Used it for recharge on 18650 & 26650 batteries. U have used other cheaper chargers that came with torches etc but never had confidence in safety. This unit gives me confidence in safety and fire risk.

Bought this because I had lost the charger for a dog grooming kit I'd boughtIt's spot on, you can recharge any size tubular type battery.Plus it does not get hot. Very happy with the product.

I used this once and it overcharged brand new batteries and I had to dispose of them and they leaked all over the charger not what I was expecting its on its way to the rubbish tip now

After one day of usage I can safely say it's the worst product on the market now.Cons:1.) Most importantly it's not safe!!! Loud electrical buzzing comes from the box. Overheats badly. Smells like burned plastic, and electrical fires.2.) Diodes not indicating properly. Once you "spin" the battery placed in hook, lights change colours.3.) Extremely cheap. Feels empty inside.Pros:None

Two out of the four pins were bent away from battery when fitted and would not charge. Bent these back and one snapped but as there are three out of four ports charging decided to keep. Charges fine. After review I was sent a replacement and this has been working non stop since receiving . Could not ask for better service.