Accelerated Battery Wear?

Hi,

I recently received my Inspiron 15R 5520 on 09/01/2013. Now, only a month later, the battery seems to have worn down by 6%.

In my opinion, that seems like a rather major wear down for such a short period of time? I have probably gone through ~20 recharge cycles in the past month.

Dell PC Checkup reports the designed capacity as '48.84 Wh' and the actual capacity as '46.05 Wh'. I understand no one will get 100% capacity, but this seems to be degrading rather quick. The battery name is 'DELL 04NW92BL'.

Any thoughts on whether this could be faulty?

Thanks Will.