Please note that it can take up to 10 hours to charge a fully depleted battery. The battery will charge when the AC adapter is plugged into the powershell and wall outlet, but only when the Z1™ is in ‘standby-mode’- meaning when the device is plugged in but NOT in use/ being used for therapy.
If this does not solve the problem, or if the issue presents itself again, please contact your supplier for further support.
When your battery has a full charge it will be displayed on the Z1 LCD screen.
The battery will not charge if the temperature is over 80 degrees Fahrenheit. This is a safety feature of the lithium battery.