Is there a way to preview the kits/sounds in battery without having to load them or by using Komplete Control?
You can preview them in Komplete Kontrol.
Select Battery in the KK Browser and then in the Preset Browser (on right side of window) select which Bank you want (Bank = Expansion) and you can preview the kits within that bank.
Only by using Maschine 😋
…yep, i know is the same as using KK, but… that's all options
perhaps if or when (both dubious) a Battery 5 ever arrives…