I have tried a few types of batteries, but these are top notch (as the price suggests). In my Canon A620 I can take about 300 pictures and many battery draining videos before these Sony batteries go dead. In my Xbox 360 controller I've had one set in for a few months without having to change them. I have multiple sets of energizer rechargeable batteries at work, and they don't hold a charge as long or completely die within a month or so. These Sony ones last longer then any other batteries that I have tried. I will not use any other brand now.