How to Replace the Rechargeable Battery
Nintendo DS
In this article, you'll learn how to replace the rechargeable battery.
Complete these steps
- Remove all games, the AC Adapter, and turn the system off before attempting to remove the battery.
- Using a small Phillips head screwdriver (sometimes called a jeweler's, micro, miniature (#00), or precision) unscrew the small cross-head screw on the back of the Nintendo DS. Once the screw is completely loose, remove the battery cover.
Nintendo DS Nintendo DS Lite 

- Remove the original battery, starting with the end with the single tab, and dispose of it according to the instructions on the battery itself. For assistance in disposing of lithium ion batteries, it is also a good idea to contact a local solid waste disposal facility.
Nintendo DS Nintendo DS Lite 

- Insert the new battery, placing the end with two tabs in first, and close the compartment. Re-attach the battery cover, being careful not to over tighten the screws.
Nintendo DS Nintendo DS Lite 

- Charge the battery completely before attempting to use the system for the first time.