What type of battery does it use? June 04, 2024 15:27 Updated Our PRO bottles have a built-in li-ion battery which is charged using a magnetic USB charging cable. Related articles When do I need to charge my battery? How do I charge my bottle? How to change the 2.0 Battery Pack How long is the battery life before recharging needed? My battery level keeps changing. My sensor stopped syncing / glowing