I tried that but it seems like the faint power being given off by the left or right channel isnt enough to open the gate.
I do have another question though. I managed to get a ds lite battery inside of the gameboy pocket and it powers it fine. I have it connected to the power jack on the bottom of it. When i go to charge the battery ive been plugging in the regular gameboy pocket charger. Is this safe or is there a chance of the battery overcharging? ( i dont know if the ds lite battery has overcharge protection). Sorry if im asking noob questions im new to trying to mod things.
I'm not sure if this is too long ago to bump, but I was recently doing the same thing. There's a huge danger, since it will just continue to charge, and probably do bad stuff, like everything that overcharges does. The solution, http://www.dealextreme.com/details.dx/sku.26114
I'm not quite handy enough to make one of my own, and that thing is pretty small. It should fit with no troubles, I got it inside a DMG.