I've made a second prototype of the PSP SuperBattery, and this time it's a 5-cell Lithium Ion Battery.
However, a problem arose: I mounted the batteries on the UMD drive cover with velcro and it interferes greatly with my hands. I'm used to having my middle finger, ring finger and pinky extending to the UMD drive cover holding the PSP straight while my trigger finger and thumbs bash away. With the Superbattery in place, I'm forced to "fold up" my middle finger, ring finger and pinky, to accommodate the gargantuan 5-cell pack which now covers the UMD drive where my three fingers used to stretch into.
I was forced to just listen to music instead of actually playing a game most of the time, and when I played a game it made it extremely hard for me to pass something easy, and when I desired to play something hard I had to take off the Lithium Ions and place them on the table to play.
On the upside though, I get stares from the security guards and other people when I follow my relatives around on Pacific Mall holding a black thing with buttons (PSP) with five huge cylinders taped on the back (Li-Ion cells) and wires sticking out of the cells into the PSP.