I recently watched a video on Youtube which claims you may charge your Mac through an adjustable power supply, by setting its output voltage on 18.5 and connecting your MacBook adapter’s wire (the one connected to the MagSafe connector) to the power supply. The circuitry at the top of the MagSafe connector determines how much power your mac is going to draw from the power supply, so even if the power supply supplies more voltage and/or amperage, your mac would not be allowed to draw more than the required power from the power supply.
Now, I just want to know your ideas on this video and if you consider it safe? Does higher voltage, say, 20 v. hurt the chip located at the MagSafe connector or my MacBook’s logic board? And based on all this, may I use a different adaptor instead of my original mackbook MagSafe charger? An adapter like the following HP charger:
HP PPP016H 18.5V 6.5A Laptop Charger
The link to the YouTube video: https://www.youtube.com/watch?v=B3w8nwyrdYw