"They just arrived a cople days ago. I tried 2 and they’re not lasting very long. My charger might just be broken or may not be the right one. "
Or perhaps those batteries aren’t so great. I now stick with brands of batteries I know. It seems like Sanyo probably has the best reputation for nimh rechargeable batteries. I have also had good luck with Kodak nimh rechargeable batteries. I think the Kodak nimh batteries might be made by Sanyo. I think Sanyo may make nimh batteries for some other brands as well. Energizer nimh batteries also seem to get good reviews.