I installed the battery mod last year which worked great! I kept the bike in storage all winter with the battery tender on it. About a month ago, I moved my bike and didn't connect the battery tender. Of course the battery is dead now. I have had it on the tender for 24 hrs but it still won't start. It will BARELY turn over but seems to be taking a charge. On a trickle charge how long should it take to fully charge the battery, or at least enough to start the bike? I assume that when it starts it will charge faster when I ride it. Can I jump the bike from a car battery?