I ordered this with the Charsoon Magic Cube Core mainly because I wanted a charging system that could charge my Tiny Whoop 1S LiHv batteries but also be versatile and have the ability to charger larger 2S-6S batteries for quadcopters. --- I got the core yesterday and the D-cell today and I read the instructions and watched some videos online to learn how to use it. I pared the D-cell and labeled it #1, I set everything up for LiHv (which should charge to 4.35V), then I plugged in the conversion cords to my batteries and started to charge. I was excited to see how much more flight time I would get now that I could properly charge my LiHv batteries but to my dismay the charger always stopped at 4.2V like any other normal LiPo battery! This is not what I wanted or what I paid for!