I grabbed this at Walmart on sale for $19.98, regularly $29.98. Even at the regular price it is worth it! It claims to hold 2.5 charges. We have fully charged a cell phone at 11% battery and still had 75% left in the power bank. It is a bit chunky but not too big. Comes with a charging cord as well. Does not heat up or warm up during use. Also has a power button that has to be pushed to activate power or charge so it doesn't drain. Great purchase if you drain batteries while on the road.