Hey Witt, thanks for the video...I agree that the elitepowersolutions batteries *with balancers are a nice solution. I should correct you that you said the Ping consists of a lot of small round double A like batteries....it is in fact consisting of flat pouch cells, held together under compression with the outer duct tape...some of the ping clones like vpower do consist of the small round cans like double As. Having said that, the pings are still tricky to do surgery on, if you ever need to. I like the idea of the eps solution. I have two pings and have found them reliable. Unfortunately, the eps do not ship to Canada so I may need to ride my trike down to Washington from Victoria to pick some up some time. Glad your goldenmotor experience didn't put you off the "ev grin" - you will love having a decent ebike. Cheers.