I'm looking to use a 36v 10ah Lipo "block" as a booster battery for my wifes 20" folder bike. Its my understanding ,as long as both batteries are toped off, I can simply run the discharge off the booster to the charge port of the bikes stock battery ( parallel ). Naturally I would have to adapt the input wire to fit a Silverfish 3 prong input. These batteries are available on eBay for under $100 shipped. I have to assume they are sans BMC. Anyway thoughts, advice, etc?