- Ensure the console has the version 3.0.1 or higher.
- Set the Auto-Sleep mode to "Never" for "Playing on Console Screen" and for "Connected to TV."
- Connect the AC adapter directly to the console until the battery is fully charged.
- If the battery charge indicator does not reach 100%, simply allow the console to charge for approximately three hours.
- Once the battery is fully charged, leave the console alone for one hour with the AC adapter still connected to it.
- Afterward, disconnect the AC adapter and allow the console to display the HOME Menu for approximately three to four hours.
- The remaining battery life must be depleted as much as possible.
- Once the battery charge is almost depleted, power off the console and leave it alone for at least 30 minutes.
- Repeat steps 2 through 6 several times.
- The battery charge indicator will improve gradually by repeating this process several times.
C'mon guys, it wasn't hard to read Nintendo Support this whole time: https://en-americas-support.nintendo.com/app/answers/detail/a_id/27111/p/897









