Yes, for charge many pack batteries within a very time period.
from Taiwan 電動遙控直昇機 bbs,
they can charge 6S,5000mAH Lipo within 7 minutes for their 700E.
if you charge 1C per LIPO (5000mAH), charge current per one pack LIPO is 5A.
30A charger means you can parallel charge 6 pack at a time.
So, you can charge 6 pack (5000mAH) within 1.5hour !!!