Have you done a charge cycle and see the reading is correct?

Things about rechargeable battery is when you keep recharge it when it's never depleted, the memory somehow get "mixed-up" or forgotten how "deep" it can go (the full capacity). So, by doing a complete "charge cycle" (full charge then use it until your mac goes to sleep itself) will help to refresh the memory.

Since you're are pretty sure you've done full recharging I think the reading should be correct.

To my understanding, in order to able to get claim for battery it must be depleted to below certain % at certain period of time.

Anyway, if you still unhappy with the battery, you should call up AppleCare helpline instead of waiting for our reply in forum. All we can do is type & click, that won't help your battery.

Actually not only charge cycle determine the battery life. Soon after the battery left the factory it's life is decreasing. So no battery will last forever (at the moment). It's just a matter when will it happen.

Having a good practice on usage will prolong the life. For all new MacBooks, the battery is internal and meaning it's connected whole time so discharge happen even you are not using the Mac.

I'm happy if the battery lasted 3 years. Else I got ACPP.

For unibody model after 2009, you can keep the charger connected all the time when you use your Mac. My new battery was bought 4 months ago, still at 101% capacity. But I had a massive drop like +-200mAh once I disconnect the battery from the logicboard. No calibration done it. I'm planning to keep it this way just to experiment.

Since new polymer battery don't suffer from "memory effects" I wonder calibration is still valid. But Apple recommend it. since I'm off with my experiment, I will report back in couple months.

Heh, me no expert. But Apple batteries do have some extra components. You don't see normal batteries reporting health, model #, manufactured date and firmware update if needed.