Pi Power Problems

[XKRJAGUAR]

Hi,

I've been having a bit of trouble with powering the raspberry pi. Note I am using a 2500mah lipo battery, connected to an adafruit powerboost 500c, connected to the gpio 5v and gnd on the pi. The setup used to work but has started to fail. At first the power seems to run as normal but then cut out after 10 seconds or so. The soldering is all correct I believe as it has been checked over many a time and there is not much to go wrong anyway. Is there anything obviously wrong with my setup or is there another way to power that isn't micro USB or the USB port?

Also note that the battery positive connection goes through a switch and then to the power boost but when charging the raspberry pi's power light lights up dimly. I don't think that this is a problem but it is something that might be considered I suppose.

All help is very much appreciated!

Thanks,
Calum.

Pictures: http://imgur.com/a/U0Wvz

[W. H. Heydt]

Besides the original Model A and Model B, the A+ and the Pi Zero can be backpowered through their USB ports. But note that powering through a USB port other than the microUSB power connection or the GPIO bypasses any power limiting and conditioning on the board. And that begs the question... Why are you so anxious to power a Pi through something other than its power connector?

[klricks]

You are not the first to have trouble running a RPi from the PB 500c. The 500 implies 500mA but the docs do mention 1000mA may be possible with the right battery. Still that is not enough power to run a RPi...... Maybe headless if you are lucky.....

There is a PB 1000c which may be better (1.8A max output) but even that is on the edge of not enough power depending on which RPi model and what is connected to the RPi.

Note that it is easier to step DC voltage down (and get the power your need), than it is to try to step up the voltage.
IIWM I would go that route.

[rurwin]

XKRJAGUAR replies to W. H. Heydt thusly:

This is because the power port is obscured, and I only have space for 1 USB port which is in use in my portable build.

(That was the report button, not the reply button )

[XKRJAGUAR]

You are not the first to have trouble running a RPi from the PB 500c. The 500 implies 500mA but the docs do mention 1000mA may be possible with the right battery. Still that is not enough power to run a RPi...... Maybe headless if you are lucky.....

There is a PB 1000c which may be better (1.8A max output) but even that is on the edge of not enough power depending on which RPi model and what is connected to the RPi.

Note that it is easier to step DC voltage down (and get the power your need), than it is to try to step up the voltage.
IIWM I would go that route.

The project is a portable so I sort of have to use a lithium battery, can you think of a solution? I'm quite tight for space!