i assume no one else has done so, so i have done so for everyone elses information.
the usb 5v module takes 5ma at 18v while not in use...so 0.005x18= 0.09 watts......
across the six panels thats 0.54 watts in total. not a lot compared to the the supposed 120watts of panels.
however seeing that they all combined run as low as 1-2watts at the start and end of each day.....kindda seems worth it.
ive also noticed the module i modified will at low light levels have a much higher open circuit voltage compared to ones i havn't. 9-11v instead of 2v.
again i think this will effect the switching on point of the controller.. giving me some extra charge time in the morning and afternoon.
p.s. word of warning.....the two main solar panel tabs at the back of the panels are incredibly fragile. take care when removing the usb module. you wouldn't want to break these tabs off by accident.
if you do learn from your mistakes, i should be a genius by now.