Eats batteries - Viridian Reactor 5 Green Laser Sight for Ruger LC Pistols w/ Instant-On Holster

The holster/laser combo seems to work, but I can't keep a battery for more than a few days.
It turns on when I un-holster the gun, but apparently does not stop drawing current when in the holster. The battery only lasts a day or so. I tried a new battery and turned the laser OFF before storing the gun. When I got to the range a week later the battery was dead again.
I tried a 3rd new battery and stored the gun out of the holster and that battery was dead a week later.

I'm in the process of trying to get some help from Viridian, but I can't get through on their customer service line. I'm hoping they will respond to my email. I'll repost with an update.