hi Shaggycoe
my 2 cents worth......it,ll charge your phone with the right regulation .....and laptop too ( electronic regulation is the problem )
maybe best to try charging a small 12v battery and use a cheap 12v commercial 220v inventor.......bike based it seems to be a good option ....if you,ve got the muscle .......if you can get 12v charging at 200 rpm its very usable ( seems like a usable motor )
plus you,ll get a six pack ...whats not to like
your not wasting your time.......