What's the difference between 85W MagSafe 1 and 2?
My laptop is MacBook Pro 15-inch, mid 2012
85W MagSafe 1 is compatible only with MacBook Pro 15'' 17'' featuring MagSafe (1) power port. And Magsafe 2 is for model after 2012.06 MacBook Pro 15'' Retina display.
Note: 85W MagSafe 1 adapter is "MAGSAFE 1" connector, please make sure you chose the right wattage power adapter and the connector. This MAGSAFE 1 has smaller pin among 5 pins in the connector. Please check yours before purchase. For MAGSAFE 2 connector power adapter, click here.