yea the Optima's aren't cheap, but I've left the lights on all day (8+ hrs), come out to my truck, and started it, without even realizing they were left on! I have a large after market sterio + used to have a bunch of neons I left on w/the truck off, so thats why I did it... now I love it, I love the dual posts so I can hook the car to one, sterio to other, also the Yellow top works great off road, due to angles / sealed / winch loads / light loads (as in lighting, not small)

 

mine has been doing the same thing only i took my battery to walmart they recharged and after i put in still having the same problem any ideas??????