Battery life varies by use and configuration.
MACBOOK PRO 2018 BATTERY REPLACEMENT MOVIE
The Apple TV app movie playback test measures battery life by playing back HD 1080p content with display brightness set to 8 clicks from bottom.
Actual value awarded is based on receipt of a qualifying device matching the description provided when estimate was made. Trade-in value may be applied toward qualifying new device purchase, or added to an Apple Gift Card. You must be at least 18 years old to be eligible to trade in for credit or for an Apple Gift Card. * Trade-in values will vary based on the condition, year, and configuration of your eligible trade-in device.