As the title says, 2 weeks tonight. 
I am having a little trouble though. I have a 510 and the regular attys aren't working very well. I have cleaned them several times with PGA with little effect. I have 1 LR atty that is holding me for now. The problem I have with this kit is the battery life. I am changing batteries once an hour (fortunately I have 3 batts). What I would like is a larger battery system that doesn't feel like I'm holding a D cell maglite,that will last at lease 4-6 hours and uses 510 equipment that i don't have to drip or refill every 5 mins. Any suggestions

I am having a little trouble though. I have a 510 and the regular attys aren't working very well. I have cleaned them several times with PGA with little effect. I have 1 LR atty that is holding me for now. The problem I have with this kit is the battery life. I am changing batteries once an hour (fortunately I have 3 batts). What I would like is a larger battery system that doesn't feel like I'm holding a D cell maglite,that will last at lease 4-6 hours and uses 510 equipment that i don't have to drip or refill every 5 mins. Any suggestions