As I was writing my Evercade gaming device review, I noticed that the battery life of the new handheld machine wasn’t quite up to par, clocking in at about four hours playtime, fairly independent of the screen brightness settings. Of course I’m heavily biased here, vividly remembering having to lug around four spare AA batteries in case my original Game Boy would die on me. It almost never happened: the 1989 machine lasted for more than 20 hours! Sure, the Grey Brick is very old. Sure, it was ba...