Originally Posted by MizzouBrent
Fwiw my old router caused battery drain for me while on wifi. No issues whatsoever with my new Linksys. Across multiple kernels and roms. Drove me nuts for the longest time.
Sent from my PC36100 using Tapatalk 2
That can happen when the router is broadcasting its ID all the time. A lot of the older routers did that in order to stay connected. If your phone was 'scanning' all the time, or at least on a frequent basis, it would never allow the WiFi to get into a quiet more. This ROM and a lot of others are setting the WiFi scan frequency to two or three minutes or more. The WiFi doesn't come on and "search" for a new connection.
It is still an indication that your phone battery won't go dead without something IN the phone drawing current. It is just impossible. If the phone circuitry isn't drawing current then the battery itself must have a bad cell or two.