I gave this #iffybooks article a try (https://github.com/iffybooks/3.3v-solar-power-station) on how to make a #Meshtastic solar node with #Heltec V3, except I tried it on a V4 instead.
To my surprise, V4's extra TX power draws up to 0.8A, which is far more than the MCP1700-3302E can withstand. So, I decided to do away with the regulator and connect the TP4056 directly to the V4's JST battery port.
Let's hope the V4 has a smarter over-discharge protection than V3 and doesn't run into a brown-out loop on low battery.


