trust your life to a battery??? not me... trust your life to a battery??? not me... Plus, you have an electronics device that can fail or be covertly fried or a frequency wave that can be jammed. When your life depends on it, keep it simple and mechanical and stay away from electronics.
you trust your life to every little part and screw in the weapon and in someone else who manufactured the live round in your chamber.
you can replace the battery every month and test the new one before you install in....for a couple of bucks.