I have been playing around with the RePhone GSM/BLE module, the Xadow Duino with the WS2812b LED strip.
I had a small issue today where I went to power on the unit, having left it for a day, and it wouldn’t turn on. After some investigation it turned out to be a flat battery. However, the battery had been nearly fully charged when I turned off the GSM board and LEDs were all out.
So it seems that the battery was still supplying power to the Xadow Duino via the ribbon cable when the GSM module was off. Would that be correct? I am asking as if that is so I will put an on/off switch on the battery lead to avoid the issue on my development rig.