I'm running three BlueSolar MPPT 100/50 chargers in parallel. I've noticed that even though absorption and float voltage are set correctly, the batteries seem to be overcharging - there is excessive bubbling and they need topping up frequently. Also, the MPPTs often aren't in the same charging state. They are connected to a CCGX and shared voltage sensing is enabled.
I'm wondering whether the tail current will have to be adjusted when using more than one MPPT as it's 2A per charger from my understanding. Should the threshold perhaps be higher so that the absorption phase ends earlier?