I have a bunch of batteries that I got with some of the N900's I bought.
I think my current battery is nearing the end of its life - I need to charge it once a day even when I am not using a lot of wifi or gps.
Used Modrana today and within one hour the battery was drained.

I just installed battery eye to keep track of battery use and hope this will make it easier to decide when to replace the battery.

Any suggestion how to determine (best / fastest) which of my batteries are still fresh or need to be replaced?