Car battery is too heavy and cumbersome to change every time it needs a charge. One maker (NIO) has a swappable battery and system but it kinda sucks and I think they will soon be bankrupt. So that leaves us with a system where you need to "refuel" the battery while it is in the tool, so to speak. It seems to work decent for now but faster charging speeds are coming and will eliminate ideas of swapping a battery. I think a five or ten minute charge time would satisfy most folks. What are your thoughts?