Ken, I do not have the brain so there is no way to adjust any settings. Seems like it charges at 1amp may 1.5, its slow. I'm wondering it it isnt some sort of charger problem. I am going to contact Fromeco, they have been pretty good in the past. The charger was blown several feet away in the explosion and it fell 3 ft to the concrete. It will not work now but I dont know if that was caused when it fell.