Hi guys
I want to make usb charger powered by battery 6x AA 1.2v rechargable Ni-MH 2500mA/h Vipow bateries
I want to power it of battery becouse its easier to buy 6x AA 1.5v batteries than charge these
(Its just more portable)
So i have already case,batteries,battery pack,lot of wires,and USB port and a step down converter
If i hook anything up i have 5v (+/- 0.1v) power supply that can supply like 2A
But if i hook my phone it charges at 499mA and it should charge at 999mA or more
I know that i need to connect anyhow D+ and D- and shield and ground but i have no idea how to...
I already googled it...and i did'nt find mouch...
MY PHONE IS EXPENSIVE AND I DONT WANT TO BLOW IT UP
(samsung galaxy s3)
If somebody needs photos i can make some and post it
So i hope anybody anwser and help...
(Sorry for my bad englsch...im from poland)