For some reason my LT full size will run a batt down past 3.4v. I normaly change the batt at 3.5v, but was running late and forgot. Ended up getting 1.5 days out of an AW 2000mah. It worked fine till the last hour, screen lit up but the letters were very faint and it fired with a some what cold hit. I checked the batt and it read 2.8v! What the hell? My LT mini cuts off at 3.4v for safty. I gotta remember to change that batt before work lol dont want to blow any thing up here.