Is it safe to power a raspberry pi from battery's?

Consider power as water, current as speed of flowing water and battery as a container...

What we really need to power anything is amount of the water(voltage) and throttle of the water(current)...

If the water container(battery) is not providing enough amount of water(voltage), add more containers(batteries) in series...

If the container(battery) is not providing enough throttle of water(current), add more containers(batteries) in parallel...

So, yes we can power anything with this logic

Have raspberry pi 3 w/7inch monitor. Need more voltage. Raspberry pi 3 needs exactly 5 volts or it will throttle. That's why PSU with starter kit is 5.25 volts. I tried my 15.000 m Amp hour battery. It doesn't

drain fast, but it does not supply enough voltage for Pi3 not to throttle.

Can pi 3 over volt. How far is safe if it can.

Eric Kazer

I believe the problem is the current not the voltage. 15,000 mAh is a measure of current over time. I bet it delivers only 1.0 Amp. A Pi 3 needs more especially with a 7 inch display! If you have two usb connections, each is 1.0 Amp. Then drive one for the Pi 3 and separately drive the 7 inch display.

Clem

Battery pack has 2 1 amp outs, and 1 2.1 amp out. The pi3 is in the 2.1 amp out on the battery pack. When I was running pi2 it was ok. I should try putting the monitor and the audio amplifiers on their own 1 amp usb power outputs. The battery it's self might not be enough.

Thank You.

It was amperage. I connected the Raspberry Pi3 to the 2.1 amp USB by its self & the monitor to one of the 1 amp USB, then the 2 amplifiers to the last 1 amp USB. The volt drop stopped. No more colored box. No more CPU speed drop which was awful. I'm surprised at how critical .1 volt drop is to pi 3. That's all it was dropping. Now I can run games like Street Fighter movie, Metal Slug 4, Metal Slug X,3, etc..

Thanks again,

Eric

I am running the same setup as you are, pi 3 with 7" touch screen as well as a mouse and keyboard. I am using the 15000 mAh SNUG power bank which outputs 5.0V at 3.0A and i can run my setup for a full 12 hours with constant use. No problems detected thus far.

I am running the same setup as you are, pi 3 with 7" touch screen as well as a mouse and keyboard. I am using the 15000 mAh SNUG power bank which outputs 5.0V at 3.0A and i can run my setup for a full 12 hours with constant use. No problems detected thus far.

Hello ! I am trying to build this kind of setup for my first time. I'd like to make a video game emulator station using Retropie, the RPI 3 and the 7" touch screen with a battery so I can play outside.

But I also want to know if I can plug it on my screen using HDMI, so it'd be a mix between portable and desk console.

Any advice on where/what to buy ?

Also, how did you manage with your battery ? Did you let it outside or you found a way to build a little something attached to your screen case ?

Thanks a lot, I'm quite nervous about this project so a little help would be really appreciated ^^