Here is a list of products what I have found to be useful.
Eneloop Rechargeable Batteries by Sanyo. These are by far the best NI-MH rechargeable batteries I have used. They are used in my canon flash and work time after time. The batteries hold their charge for days when not in use. They are terrific.
You can check them out at Amazon.com by clicking here.
I don’t have the 1500 recharge cycle batteries yet. The ones I bought have been charged scores of times and have shown no apparent degradation of performance.
Hope they do the trick for you. Just match the milliamp output for your device.