If powersaving is enabled, and it's active, the openSPOT3 consumes much less power. Powersaving is active if the standby status LED sequence is blinking in a much longer interval. The openSPOT3 can only enter powersaving state if the web interface is not open and there are no ongoing calls.
Enabling powersaving reduces LED brightness, and enables the Wi-Fi interface to enter power save mode if no important communication is ongoing. The built-in LLMNR and MDNS servers may not function properly in this mode, so opening the web interface by entering the openSPOT3's hostname into the browser (example: http://openspot3.local) may not work reliably. The recommended method is to use SharkRF Link to open the web interface.