The Battery is as good as the 3DS battery, It's your fault for throwing away the box and it doesn't need fixing, Buy BOTW if you're running out of games. I have 150 hours on it and there is still a ton to do. It's that good. They're gonna start charging money to make the internet better, just wait a little while. Also i assume since ARMS and Splatoon 2 are online centered games they'll fix it soon