tate and bike4food,

THaks for the Jet recommendations. I looked at them since they received such high rating on mtb.com. Jet seems like the safe play and I guess I really can't go wrong them. I was hoping to get something cheaper. I guess that is a ridiculous thought considering the price of everything else for this sport

Do you guys suggest going with a single or dual, and do I need the fuel guage? Do they offer the water bottle battery only?

Thanks.