Nikon EN-EL14a Model

CAREFUL WITH THIS! YOU MAY PERMANENTLY DAMAGE YOUR CAMERA! DO AT YOUR OWN RISK!
I measured EN-EL14a to make permanent power source for my Nikon camera. EN-EL14a has protection mechanisms to be authenticated by the camera. However, potentially, one could provide power from a PSU but let the battery provide the authentication to the camera (somehow both PSU power + and - connected to camera, meanwhile battery pin for validation connected to camera. EN-EL14a has 5 pins. One for authentication, another for temperature of the battery. I didn't continue this project but if anyone wants to take continue be my guest. You can use these models to insert your own connections to the camera at YOUR OWN RISK. If you don't know what you are doing, then don't do it. This requires knowledge in power electronics.