I use 18650 batteries daily and the iSDT C4 battery charger has been great. Despite the fact that you can only charge 2 Li-Ion cells at once, the wide variety of battery types it supports and useful features, make up for the limitation.
iSDT, the company that makes my favorite LiPo charger, the SC-620, recently released a very fancy battery checker, the BG-8S. I decided to get one and see what’s special about it.
We will have a look at the new BattGo Technology which could be useful for LiPo batteries safety. It will also help you keep track of the battery’s internal resistance, status and other info, and it tells the charger how they like to be handled.