[This review was collected as part of a promotion.] I have always used Energizer batteries because of thier performance, I can trust that they will power my electric items and keep them going when I need it the most. They were a life saver when my power went out for 10 hours, they kept my flashlights going for hours and they never failed me, I'm happy to use thier C batteries in my stereo as it keeps me entertained by my music while at work. Thank you Energizer! They really do keep going, and going and going!