The solar controller has a decent efficiency percentage per its specs, but the Eco-Worthy's funny little "demo" it does for PWM vs MPPT shows a percentage efficiency wrt that, and the percentages are all over the map depending on the situation for insolation etc not clear how they get that number.
So there is a sort of standing efficiency for the set-up and then there is another efficiency for how much the MPPT or maybe bucking plus MPPT is doing for you--or something like that!
I just wanted to know if that jump in amps was about right going from just bucking to bucking plus MPPT when it went into Bulk that time. I thought maybe catching it at that moment where battery voltage was still 13 but the amps went up by that amount would reveal something.