You will be alerted in the Purezone app when it is time to charge the Purezone rechargeable Lithium-ion battery pack.

• Battery strength 20% = "Charge battery soon" alert
• Battery strength 10% = "Charge battery now" alert

You can also look at the battery icon at the bottom of the Status page in the Purezone app to see when it is time to charge the battery.

• 2 bars battery strength = Recharge battery soon
• 1 bar battery strength = Recharge battery now
  • At 1 bar battery strength, an orange light will blink on the battery pack and the indicator in the app will display 1 red bar of battery strength