NO. You risk damaging the RPi. The specification is 5.00V +/- 5% or 4.75 to 5.25Vtony1812 wrote: ↑Sat Oct 07, 2017 1:20 pmHello, I have a battery pack rated 6V 2000mah, I really like to use it on the pi3 due to its small form factor and light weight. but I know that pi3 takes 5v on its usb plug. Is it necessary to regulate it down to 5v so that it would not demage the pi. Can the pi tolerate 6v without being demaged? After all, It is only 1 volt difference. Thanks.
No, because 1.2V is the average voltage per cell. Batteries vary in voltage. When fully charged they may give 1.4V or more for a short while, which will mean 5.6V+ into your Pi.
i also recommed you to use a "usb battery bank" from the shelf.
That is a good policy if the parts are suitable. A 6V battery is NOT suitable for a PI, it needs at least a 5V regulator (preferably a switching one, preferably one that can work with the full range of voltage from your battery, depending on its charge).
that is not only wrong, what you say with that is actually: that RPI3B would be protected from overvoltage!
What I said is simplified, but correct. Yes, the Pi is partly protected against over-voltage on the microUSB power input.
that you are happy with it is the only thing that counts.tony1812 wrote: ↑Sat Oct 07, 2017 10:15 pmI took a chance, took one cell out of the 5, disassembled the batter pack into individual cell, put the 4 cells into a regualar AA battery holder, it comes up as 5.4 volt and it powers up the pi like a charm, and it lasts about 90 minutes before I need to recharge it. :}
Yes, voltage drop from the connecting cable is a factor. I've been running my Pi3 from a 5.3V supply for years. However, even with a relatively short, good quality USB cable a 0.05V loss would be considered good, so the input to my Pi3 is certainly within limits (one of these days I really should properly measure it). I do have a DVM on the USB output that is indicating 5.15V now (5.2V with nothing in the USB ports).Imperf3kt wrote: ↑Mon Oct 09, 2017 2:27 amAt 5.4v it is only a matter of time until your Pi dies.
The limit is 5.25, going even 0.01v over this risks the Pi every time. You are likely causing unseen damage.
However it is possible you have a voltage drop before it gets to the Pi. What do the 5v rail and GND read?
Oh and as a tip, the Pi only requires 5v for peripherals. It will quite happily work at 3.7v