Game Boy Advance
Mad Catz Rechargeable Battery Gear
Most rechargable batteries poke out of the system, sometimes claiming that it makes the GBA "easier to hold," other times just in the way. This slick rechargable battery holds 12 hours of game time. With the included cable, Mad Catz' product also doubles as an AC adapter. Though there is no comment on the technology used (and therefore none on the endurance), with a price of $9.99, it's worth it for the AC adapter alone! The Rechargable Battery Pack is available now.