There is a comparison chart of XTAR VC8, VC8 PLUS and VC8S. If you are looking for a 8-slot charger, could check their differences in advance!
https://www.xtar.cc/news/xtar-chargers-comparison-vc8-vs.-vc8-plus-vs.-vc8s.html
https://www.xtar.cc/news/xtar-chargers-comparison-vc8-vs.-vc8-plus-vs.-vc8s.html