coconutBattery isn't just a tool which shows you only the current charge of your battery - it also shows you the current maximum capacity of it in relation to the original capacity your battery had as it left the factory.
coconutBattery gives you all these information just in time because of it's live-feedback interface!
Of course you are able to save the current maximum capacity of your battery - with just one click! coconutBattery uses Apple's new and really powerful technology named "CoreData" to realize this comfortable saving option.
And last but not least: coconutBattery is Universal Binary (you can run it on Intel-Macs!)
You know, honestly, I would reduce that review to the last sentence :D