Icharger 4010 update
#2
straight from manual.Input Voltage 9 - 50V DC
#3
I just updated my 4010. I didn't really read the instructions, just connected a USB cable to the computer and had the Junsi updater do it's thing. Worked fine. Charger powered off my normal power supply. I guess there's a risk that if you loose power during the update process you could brick your charger.