Macbook Pro low battery warning to instant recharge My Macbook Pro (Mid 2012, OSX 10.10.2) sometimes gives the Low Battery warning, then immediately after dismissing the notification the battery pops back up to about 25% battery, still showing a red battery icon.



It is above 20% but is still red.

What could have caused this, is it an error in Yosemite OS X, or is it a reserve battery power I did not know about, or is it something completely different
That is your battery it self, acting up.

Following the SMC reset I would recommend a single (one time) deep discharge.

The deep discharge will reset the Battery values reported.

Just leave your computer running till it shuts down by it self due to low power.