A couple questions about the new lithium motorcycle batteries? First, do these new batteries come equipped with charging and or balancing circuits built in? If not, then do they charge from the motorcycle charging circuit, or do they depend on plug in maintaining? Reason for asking is because I am very familiar with lithium batteries for rc airplane use. The rc batteries require a very specific charger type. None of the motorcycle battery manufacturers mention any charger or balancer circuits built in. I dont see how the stock bike charging circuit can suit a lithium battery without it blowing up??