Take out the battery at the end of each hunting season.
Sorry. That's ridiculous.
Yeah.
The battery in my truck AR with a VX6 3-18 TMOA is going on a year having never been shut off.
The Leupold Fire Dot shuts down after 5 minutes of not moving and I set the illum level low enough it's only visable in low light.
It's a pretty slick system.