External power can be supplied from an external source, such as a Power Bank (5 V, 9 V).
Attention! Charging TPS 7 batteries from an external source at temperatures below 0°C can reduce battery life. When using external power, connect the Power Bank to the device only after it has been turned on and working for at least several minutes.
Attention! When the device is powered externally without a battery installed, the Power Bank must support the USB Power Delivery technology. Otherwise, the operation of the device is not ensured.