Battery of my Mac with Problems When I charge my MacBook the battery goes only up to 99% and doesn't reach 100%. Is this something to worry about and if yes, how do I fix it?
To determine the Battery status open About this Mac -More -System

now look for battery information in there under Power.

Look for:

Charge cycles count &lt; 600 for yours

and the Full Charge Capacity (mAh): > 4557

In any case resetting your SMC (System Management Controller will help some).