My Sig came with a Panasonic CR2. I ordered two Energizers from Amazon today and they should be here in two days. However, the battery it came with checks out as "good" and at 3 volts on the voltage meter.
Elk hunting this year west of Dillon it was 10 degrees out at 9100 feet. The howling wind made it feel extra nice. My Leupold ranged the elk first try at 560. Then again at 510 when they came out of a draw. A rangefinder that can't take a little cold is a very poor tool.
I'll keep messing with mine with the new battery and then see what it does in the cold.
