RE:RE:RE:Exro's Lab And I never knew about them when they were here! I would have been all over investing in them in the early days. I was going to import Chinese electric bikes back in 2003? Except the controllers kept burning out , funny thing is I still had one of the battery packs I took in for recclying last week it was three mini lead acid batteries and in total must have weighed more than 45 lbs or 20kilos .