Hi everyone, I'll buy a Raspberry Pi 3 B, some say they can be powered by a 1A phone charger however the recommended power supply is 2.5A
I have a power surge suppressor that has 2 USB ports however I'm not very electric-savvy,
Can someone help me to understand if these ports offer 2.5 amps each or they share those amps and they actually have 1.25 with the little documentation I have?
click to see full pic, there's a little more below
I have found it somewhat difficult to find an adequate charger for the pi3. The recommendation is 2.5A, but last I checked, most on Amazon are 2.4A. It will work, either way, but if you want to be sure, there are some "quick chargers" that provide 3A. I found one with USB C and got an appropriate cable to power the pi. That said, I doubt it's pulling more than 2.4, but if you're finding it difficult to locate a charger good enough, consider buying or building a dedicated (usually wired( charger instead of a block with female USB that is designed for a phone.
If you are planning to draw a lot of power you might be better off, getting an old PC power supply or equivalent one with a 5V rail, and connecting its output to the Pi's 5V pin on the GPIO header. That's how most people power their "Raspberry Pi supercomputer" ;-)
A standard PC power supply can easily provide over 15A on the 5V rail, in my experience. If in doubt, you can always check the sticker on the power supply, but I have never seen a PC power supply with less than 10A for 5V.