is this effect the batteries ??
It will increase the charge time, but I do not believe it will affect the batteries.
I wonder if it is due to the resistance in the charge doctor.
thanks for your answer
i have 3 deferent usb charger detector
its shows this problem only with box
as i have other boxs like enb and tese
i found out this with soshine 4 battery box
while charging at 1.6 amp it goes down to 1 amp for 2 seconds and up again
but with this box it goes down to 0