I feel like two AA batteries won't carry enough voltage and amperage to charge. Two AA has 3 volts whereas you need a minimum of 5(?) volts to charge a phone. Wall outlets also have a crapload more current than two batteries put in series.
Speaking of which...
If you put the batteries in parallel, you might end up with enough current to charge, but definitely not enough voltage. Maybe.
Speaking of which...
If you put the batteries in parallel, you might end up with enough current to charge, but definitely not enough voltage. Maybe.