I have a MacBook Pro late-2012 model.
And my cable started showing symptoms of fraying.
So I ordered an offbrand cable from Amazon with good reviews and it arrived today and I tried it and the Mac recognized that it was getting power but the percent won't go up it's stuck at 95% but when I click on the battery icon in the status bar it says Battery Is Charged same thing with the original MagSafe but I just noticed this behavior now.
But with the MagSafe it would reach 98% sometimes and stop other times it would go to 100.
Should I just ignore this or do something?
Best Answer
It is common for the Macs battery to stop charging around 93-98%. It does it to prolong the overall life of the battery. Plus, your battery will have some wear and tear now depending on how many charge cycles you have used up.
http://support.apple.com/kb/ht1446#Troubleshooting
But if your MagSafe adapter is charging to 98% consistently and the off brand one is not, then the new cable is a suspect. Charging on Apple devices depend on several factors and there is some intelligence built into the battery IC which I believe communicates with the adapter to tell it when to stop charging. I am not sure if an off brand adapter plays well with the battery IC.