Does the 80w power adapter work for the 13" mackbook pro?

Question

Any help would be appreciated... Thanks

Answer 1

You can use the power supply that came with your Mac or one that has a higher wattage, but not one with a lower wattage.
Specifically, in my home we have only 85W power supplies. They work fine with the older 17-inch Macbook Pro, a newer 15-inch Retina Display Macbook Pro, and with my daughter's Macbook Air 13-inch (which came with a 45-watt power supply that she leaves in her dorm room because she knows she can use these 85-watt ones when she visits).
The older style power supplies' magsafe plug can charge the older laptops as well as the newer Retina Display computers, but for the Retina Display laptops, you must use the small magsafe adaptor/converter along with the older style power supply.
I don't know of a way to use the newer power supplies that came with Retina Display laptops on an older laptop that accepts the older style magsafe adaptor.
If your original question was whether a power supply for a Retina Display computer can be used to charge a non-Retina Display 13-inch Macbook Pro, then I think the answer is NO because the Retina Display Macs use a different magsafe plug that won't fit into the slot for the 13-inch non-Retina laptop. The older power supplies CAN be used with the new Retina laptops because there is an adaptor one can get to allow the old magsafe plug to fit into the new Retina laptop.