Hi Blast,

Most cell phones can be powered from a single AA cell. The problem is that most phones require a 5-6 Volts input. This requires a switching voltage to voltage regulator, which takes the 1.2-1.5 volts of the AA cell and outputs 5 or 6 Volts.

The cell phone will then have a switching voltage to voltage regulator to convert the 5 or 6 volts down to 3.3 or 3.7 volts to power the phone and/or to recharge the Lithium ion cell in the phone.

What would be possible would be to just duct tape 4 AA cells together (gives 4.8 to 6 volts depending on the cell chemistry) end to end together with the two pieces of wire and then ensuring that the wire touches the correct power terminals on the phone. If your phone has a USB type power/data connector this would be more of a challenge.