I use a couple of Sekonics, one of them daily in the studio and the other waits (and waits) in my bag for those rare days I can get out and shoot some stuff for myself. I have never had an issue with battery use in either meter. One thing I do like about them is that they use normal AA batteries, so if you are paranoid about being caught short by your gear (who isn't if you are shooting jobs on location?) that is one less thing to worry about. AAs can be found anywhere so I can check that off my OCD list.