MarkHaysHarris777 wrote:To add to Heydt's comment above, the exception these days to the rule are the new Samsung fast changers that will not only provide the right current, BUT, they will also bump up to 9v !! ... and that will blow your PI. Be very careful about PSU that claim to be 'fast' chargers because they will 9v your PI and destroy it !
mosespi wrote:This is just disinformation. You will not blow up your Pi with any Samsung quick charger that I am aware of. There is a specific handshake that occurs before these types of 'fast' chargers ramp up to a higher voltage. Imagine the backlash that Samsung (or Qualcomm, which has the other fast charger standard) would get if they put a higher voltage on a standard micro USB connector by default, frying phones and Pis left and right.
Unless you think your quick charger was from some shoddy factory with fake markings.. I wouldn't worry.
Moses is correct. Qualcomm Quick Charge (and Samsung QC, which is basically the same thing) chargers will only output 5V unless they can verify that the device is QC compatible with a data handshake. They are not going to fry a Pi, because it will not pass the handshake verification.
In general, only devices with a Qualcomm Snapdragon processor or a Qualcomm QC chip on board will be able to use QC. The Pi has neither. My Zero is running off one of my QC 2.0 chargers as I type this, and according to my DVM it's receiving 4.99V.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?