I added a 3S2P 18650 power source to a Sentrius with balancing and DC 12V regulation, so now it is a fully portable LoRaWAN gateway that just uses a phone hotspot as a backhaul.
I haven't completed my power tests yet, but it seems to have no problem running for a full day...
![](https://thethingsnetwork.org/media/posts/1bc1027c647044138e051a946e4223c1.large.jpg)