i am debating purchasing a GBA sp power adapter. i have a GBA sp whose power adpater is 220V. i really don't wanna spend $10+ to revive something i could get for 40 shipped. anyway the question what COULD happen by plugging in the 220v adpater into a 110v socket. my liitle knowledge of physics says the adpater will output 2.6 volts. but i can't figure out how the resistance of the battery and the new voltage change relate. i am thinking what if i end up pumping more amps into it than was needed but i did physics in high a long time ago and can't figure it out. so what does AT think. will it damage the lithium-ion battery in the GBA sp or will it be OK and just not charged fully due to lack of voltage?