Oooh, interesting development^.
I do like these multi-lipo chargers, saves time having to tell newbies how to make a special charging harness ( a la BrianG style ), even if the charge power is a bit limited it still means you get 4 fully charged batts in a couple hours say, and thats enough for a full afternoon's fun generally.
Hv chargers for ebike and 1/5 scale loonies would be sweet though, I can see a definate market emerging with rtr ebikes and conversion kits appearing on the market more regulary now ( I'd like to make one myself eventually, maybe a project for a bit further down the road once I've got my spare room fully setup as a mini machine shop
).