Hi there, the VP4 Plus can support unpotected 21700 cells, but can't support protected 21700 cells. This VC8 charger can charge protected 21700 batteries, test batteries’ real capacity, test battery internal resistace, have storage and discharge function. Are you looking for a charger with these functions?The VP4 Plus does not support protected 21700 cells correct? I am looking for a charger that supports these cells and has an analyze function.
The VC8 is interesting. That might be what I am looking for. I see it uses USB-C; do you know if its USB-C support is fully standardized or are there any limitations as with the VC4L not supporting certain USB-C to USB-C cables?