Dont give him all the credit
I modded the thing for him :)
it is indeed running parallel to the battery I think you would need some sort of intelligent control to the transfer of power from one battery to another. id just mod s stock charger to connect to whatever hobby charger you have.
Benjamin White
R/c Monster Team Driver
Jq the car, LST, Sportweks turmoil pro
Unconventional Techniques, Superior Results