I own a mobile-wifi (portable device that acts as WiFi server locally, and uses a 3G network to carry the Internet data) and needs its battery to last as much as possible.
Basically, a device (e.g. my iPhone) needs a WiFi access 10mn per hour, during the 50 remaining mn the mobile-wifi "sleeps".
But, in order to be discovered, the mobile-wifi broadcasts, by default, its own SSID every x seconds (x must be low, as it always appears quickly in the wifi servers list).
However there is a way (settings menu) to disable the broadcast. Then, in order to access the wifi server, one has to enter manually (once) the SSID and its security protocol + password.
Is it a recommended procedure? Does it increase the mobile wifi battery life?