I keep one Aimpoint on the go rifle set on intensity 7, which is a good day or night level for me. All the others are OFF. If they are not on a rifle, the battery is removed (goes for any optic, RDS, or WML).

Update: Received the unit back from Aimpoint a few days ago. Apparently there was a short in the circuit board and it (circuit board) was replaced under warranty.

Thanks for the update.