If you've registered for Amazon Prime shipping, you know you can get something fast (two day FREE). I needed a set of batteries, and instead of going to my usual over seas and 4 weeks waiting store, I took a chance on the Vivitar branded version. Yeah I know they probably don't make them and who knows what they are really called. It charges on OEM, shows battery, the camera registers battery information, and seems to be doing fine (so far). We'll see how it holds up, but at least the price was about the same as elsewhere, and claims a 5 year warranty.