Scared? No. It won't hurt the Pi. The biggest risk is some peripherals not working and the potential to corrupt the SD card. Best thing to do is to get the official RPF PSU...which you can use to charge a phone should you be a mind to when it's not powering a Pi. (In fact, I use older RPF PSUs--such as ones rated 2A--to charge phones, tablets, and the like.)
RPi3B+: .....need more power .....please.... cant ...function...........properly
2.0A Phone charger: I can only give as much.... and my voltage is dropping already....
RPi3B+: ...not ..... enough...(cough...cough).... need ... more........
2.0A Phone charger: maybe you need help from a proper power supply with 2.5A.......
RPi3B+: ....take ...me .....(cough... cough) there .....[wheezes]...... now......!.
That just isn't the case. I currently have two RPI 2Bs and two RPI Bs powered perfectly well using phone chargers. They are genuine LG and Samsung chargers rated at 2.4 amps using quality leads.
Chargers have moved along since the old days of 0.5A or even 1A chargers, the demands are much greater now for fast charging and quality.LTolledo wrote: ↑Wed Jun 19, 2019 10:34 pmRPis with the BCM2835 and BCM2836 SoC may be powered by some (not all) reputable phone charger as long as it's rated capacity complies with the board requirements.
The BCM2837 and BCM2837B0 ones are more power hungry, and phone chargers cannot keep up with the requirements of the board.
Remember, phone chargers were designed to charge 3.7v batteries, the supply voltage may drop to 4.2v and still be able to charge a 3.7v battery.
None of those phone chargers were designed with the power requirements of the RPi3B or RPi3B+ in mind.
If you cannot follow the logic in this then its up to you.
Which models fall into 'ugly'?davidcoton wrote: ↑Thu Jun 20, 2019 4:34 pmThere are three categories of charger:
Only chargers in the first category will work properly to power a Pi.
- The Good
- The Bad
- The Ugly
Unfortunately it is not always possible to determine the category of a particular charger;
some may even vary in category depending on temperature, phase of moon, and how badly you need it to work.
I have a very pretty Ikea Koppla 3-port phone charger, but when it comes to powering a RPi it's decidedly ugly.
I have one powering two zero Ws fine but would not try three
News to me, all my Pi's are powered by the Official supply. It could be new, country related or a feature of the enclosure of your Pi (One of my cases does have a power on/reboot/off switch but it's not official).
No it does not. Whatever you have, it's definitely not official. And power switched on the low voltage side is not good practice, so that's not a particularly good power supply design (better to switch the high voltage).