[9to5Mac) Jeff Benjamin - Recently I noticed that my Late 2013 MacBook Pro with Retina Display seemed to be dying at a faster clip. Naturally, I assumed that the battery might be going bad.

After checking the battery cycle count, I learned that I was probably wrong about the battery being bad, as the cycle count was still well within the normal life span of my MacBook. Here’s how I was able to verify that everything was okay with my MacBook’s battery.

read more on his article here.