Will a Dewalt 20VDC Lithium Ion to USB device work to allow occasional swap out of a battery in order to keep an electron alive for 3 months? Something like this:
I would still use the 1800 maH lipo connected to the Electron but then connect this dewalt battery to USB a USB cable.
What I like about this: 1) easy swap out with batteries already commonly used in my industry. 2) I get to avoid the cost of larger extended lipo batteries for customers without power by putting the burden on the customer to source the battery. 3) A person already frequents the area and swapping out a battery once a month would not be a big deal. By the way… the application would wake up every 30 minutes, take readings, publish an event and go back to deep sleep. This is in 10 - 50 degree F temps. With my initial limited testing, I can get about 1 week out of the 1800 maH battery that came with it. If I am thinking about it right a 20V 3,000 maH hour dewalt battery should get me ~16,000 maH at 3.7V . This should last me about 8 weeks (maybe less due to some leakage current. Has anyone tried something like this? Any reason this wouldn’t work?