I'm sure the dealers will chime in here and correct/clarify but this is what I understand: The SuperCharger has two powertube batteries built into the downtube and top tube. The New Charger has one powertube built into the downtube but offers a rail system where you can mount the power pack 500 on top of the downtube and then go dual battery. Perhaps there are other differences but that is what I noted from watching the Eurobike videos. If I were making the purchase decision now and the bikes were available, I'd go with the New Charger. But just personal preference.