1. Restores deeply discharged laptop batteries (about 15 minutes) 2. Helps with troubleshooting - you can check the battery condition and issues that prevent it from working properly 3. Suitable for MacBook models from 2009-2022 4. All work can be done directly on the laptop. No need to remove the battery! 5. Package List: 1 x Main Device, 4 x Connection Cables
