Nitecore has announced its “World’s First Smart Battery” for Sony, the Nitecore NFZ100. It’s a drop-in replacement for the Sony NP-FZ100 used in the Sony A7 III, A7R III, A7R IV and A9 mirrorless cameras. At least, it is if Sony doesn’t make 3rd party batteries impossibly impractical to use again.
As a “Smart” device, the new Nitecore Smart Battery talks to an app on your phone; Nitecore NNERGY. The app will be available for both iOS and Android and lets you monitor the battery health and other details wirelessly. Obviously, it needs power to do this, and I’m not sure a battery that drains itself is necessarily a great idea.