For the past few months I have had this issue in which sometimes when i try to turn on my 3ds both the top screen, bottom screen and the little green 3ds light will take some seconds to completely turn on. The system boots up just fine, and I can hear the background music of my themes while the screens are black. If I try to navigate the main menu I can hear the noises the theme makes when switching through one icon to another also. The screens take like 5 seconds to fully turn on. It doesn't happen every time, and sometimes weeks passes without having this issue. The only thing that comes to mind is that last year I had to get a new battery (It's not an original one, but is the only one i can get where i live.) Could this cause any more issues in the long run?