GBA SP AGS-101 backlit pickup.

One thing I do is replace cartridge batteries for gameboy, GBC and GBA games with a CR1616 battery holder. I needed a gameboy to test, as I only could test GBA via my wife's old DS lite. 

A visit to stock xchangers in Nanaimo turned up a lovely backlit model that'll allow me to test everything I need, so I had to reshell it. 

PAL Super Nintendo for the win, btw.