[arrrg]

Apple will replace the battery out of warranty no problem. Their laptop batteries are competitively priced (no idea about the iPhones), i.e. replacing the rMBP battery costs $199 (including labor), a comparable battery from Lenovo for T-series laptops costs $179.

[harrytuttle]

Well it's not comparable. I'm sitting on a new 9-cell that cost me $129 equivalent and has 8.5 hours left :)

When that runs out, I can take it out and stick the other one in out of my bag.

[harrytuttle]

Downvoted by an Apple fanboy no doubt!