I have had my Alienware for about 4 months now, the battery quickly went to 4% wear and is now at 6%. Some time ago it would only charge to 92-96%. I thought this was the wear but it is not. The battery only charges to 85% now. I have tried taking it down to less then 7% and recharging but no help. I have an Aida64 report posted at the bottom of this post. I think the 6% is the value from designed capacity to fully charged capacity. Current capacity is the maximum it will charge. I usually have the computer plugged in. My two other dell laptops show 100% and varying amounts of wear.

   
Battery Properties   
Device Name    PABAS0241231
Manufacturer    Simplo
Serial Number    41167
Unique ID    41167SimploPABAS0241231
Battery Type    Rechargeable Li-Ion
Designed Capacity    88800 mWh
Fully Charged Capacity    82850 mWh
Current Capacity    70330 mWh  (85 %)
Battery Voltage    17.061 V
Wear Level    6 %
Power State    AC Line