Hi @Rftop, I think I’ve read through the entire post and replies (which are all fantastic by the way), but haven’t seen the make/model of panel and controller that you’re using? Can you share that?
For my Electron+Asset Tracker Shield build, I used the Voltaic/Ada 2W panel and the Adafruit LiPo Solar charge controller, and connected to the 5-12VDC screw terminal block on the Asset Tracker (which I assume is connected to the VIN pin of the Electron). This SEEMED to work fine, though nowhere near the performance you are getting.
For the Boron on its own, I was assuming I’d have to move the battery to the BATT JST of the Adafruit charge controller and then connect the LOAD JST to the Boron LiPo+ JST. Trying to maintain a ‘pluggable’ build for quick assembly/disassembly. I have no idea if this works in practice because I haven’t even had time to unbox the shiny new Boron.
I noticed that you mention the USB port for solar power input, which I’m confident is technically correct and a lot simpler, so that made me wonder what controller you are using?
Thanks for any tips. I really appreciate you and @RWB contributing so much detail in one post to an area that is foreign to me.