Anders, the hobbyking 4*6s charger looks ideal and should properly balance charge all four of ur 6s lipo in under an hour. However you will have to remove the lid of your battery box each day to access the individual leads so a quick release method like Floyd1 uses for his lid might simplify that. I bulk charge all four using the discharge port using a 400w chargerhttp://www.bmsbattery.com/al...po4li-ionlead-acid-battery-ebike-charger.html set at 50v which takes a little over an hour. But every week or two the individual blocks must be removed and balance charged individually using an imax b6, which isnt as tedious as it sounds if you first bulk charge them to about 80% first. And you need a power supply unit for the balance charger as well.
Building a slightly bigger fibreglass battery box with room for the controller etc might well be a good option.
Building a slightly bigger fibreglass battery box with room for the controller etc might well be a good option.