Macbook Pro Charger Voltage Output

How does the power adapter know what voltage it s to output to the macbook.

Macbook pro charger voltage output. Replacement mac book pro charger zealife 87w usb c charger power adapter with 5a 6 6ft usb c to c cable for macbook pro 15 13 inch macbook 12 inch macbook air ipad pro 2018 2019 led indicator 61w usb c charger power adapter for macbook pro macbook 12 inch macbook air lenovo 2020 2018 ipad pro 12 9 gen 4 3 ipad pro 11 gen 2 1. Make offer 85w power adapter charger magsafe1 l tip for macbook pro a1343 a1260 a1286 a1278 new original magsafe1 60w apple macbook pro adapter charger a1278 a1342 a1181 31 99. I ask because the apple charger output is rated at 20 3v 3a 9v 3a 5 2v 2 4a. All macbooks save the new retina macbook which uses a usb c charging port use nominally 20v power supplies the magsafe chargers 20v will be marked on the bottom of them.

Mac book pro charger replacement 60w magsafe 1 power adapter l tip magnetic connector charger for apple macbook pro 11 and 13 inch 2009 mid 2012 4 7 out of 5 stars 352 20 99 20. The mac detects the full voltage on the power input and reads the charger id using the 1 wire protocol. In actuality the peak output voltage is under 19v 18 5v as you mentioned is normal the same as almost all other laptops. There s a 16 bit microprocessor inside the charger to control this and other charger functions.

Does anyone know the input voltage amps for the new macbook pro 2016 w function keys battery. After an hour and a half the 87w charger added 76 battery while. I bought a portable external charger with outputs of 5v 3a 9v 2a 15v 2a 20v 1 5a. I read teardown and exploration of apple s magsafe connector and this article mentions that the 1pin.

Make offer 85w charger power adapter for apple magsafe 1 macbook pro 15 17 inch a1286 a1343 uk 85w t tip mag safe1 power charger for apple mac book pro 15 17 2012 current 21 35. I want to make sure using it regularly won t damage the battery long term. As you can see the 87w charger filled up my 15 inch macbook pro battery more quickly than the 60w charger but not by very much. After exactly one second the charger switches to full voltage 14 85 to 20 volts depending on model and wattage.