DSiXL - standby last very long

[Galaki]

So, I was waiting for a new 3DS game to play and went back to the DSiXL to play DQMJ.

On Aug23 morning, I closed the lid and left it unplugged with the game still on after using it for 2 hours-ish.

It's now Aug27 and it's still on. How much longer will it last?