i dont know what the difference is between the ac adapter and battery pack.does one of the two make battery life last longer?
the ac adapter is for when you have a plug around, and as long as you have power going into your house you can play your psp, batteries are for when you are on the go and will have limited play time
when you use the ac adapter while running the system you are letteng the battery stay in the same place ( it doesnt drain energy) when you use the battery pack, you waste the battery drainage
