It works!!!!!! she is alive without a cord to the wall!!!
Minty boost v3 with Iphone 3GS works no problem, even without original white iphone lead!!! No modifications required, no changing of resistors.
Just use 'Eneloop' ready to use rechargeable battery from Sanyo HR-3UTGA 1.2V 2000mAH (with a minimum of 1900mAH) They do a higher cap one also, not tried that one yet.
I know i am not going to have the can't speak battery is low conversation again!