A fully charged controller battery should provide enough power for approximately 12 hours of normal operation. Recharging a battery after a 12-hour use can take up to 6 hours if you are recharging your controller from a wall outlet or Axon Dock. Recharging could take considerably longer if you are recharging from a computer.
If the battery depletes significantly during the shift, you will hear 4 quick tones repeating every 20 seconds. This message indicates that less than approximately 20 percent of the battery capacity remains.
Always recharge a depleted battery as soon as reasonably possible. You can use an Axon Dock, wall charger, or computer (using the 2.5 mm to USB cable) to charge the battery. Using an unapproved wall charger may degrade device performance.
Note: Do not have Evidence Sync open and running on your computer when recharging an Axon Flex controller with a computer.