Yes. The Power Bank will turn on and off automatically.
When you use the Power Bank with the Joolca Pump, you will still control the entire HOTTAP and Joolca pump system from the shower head.
Flicking the shower head "on" will trigger the Joolca pump to turn on, and the Power Bank will begin to supply power.
Flicking the shower head "off" will turn the pump off. After a few moments of inactivity (i.e., no use) the Power Bank will turn off.