@matigo Love it! ?
Yeah, the GameGear was a battery hog, just like the Atari Lynx. Both impressive machines in many ways, looking at the technology used, but failing miserably compared to the Game Boy in an era where batteries came at a premium. Not even contemporary rechargeable batteries can power those two for so long, but I've measured 30 hours of gameplay in an original Game Boy with fully charged batteries from IKEA.