5:30pm, Eiger gave up. Dimmer than Titan, I have been out doing yardwork, but I'll give it 36hrs...:shrug: 1.01v on my meter... Tasklight and Titan still going. I want to run the Matty and Eiger heads, along with the EO1 and Arc AAA-P out of the same pack of batteries, I am going to the store for dinner and will pick up an 8 pack of AAA's and start that after dinner. I, too, am suprised at the Eiger performance, and want to do it again with no variables. I did start the MiNi CR2 with another 4Sevens cell, I assumed they were tailored to the light. Maybe I got a bad one... Be back soon!