Hi, I don’t quite have the mental magnitude to crank out a schematic right now. If you are familiar with the TP4056, I hardwire the LIPO onto the battery terminals of the TP4056 and I switch the positive output from the TP4056 to the ESP32C3, feeding pins 13 (gnd) and 14 (vcc) of the ESP32C3. That way, the device can be off when the battery is charged. I have had great success doing this with 18650’s but not with the smaller poly-pack batteries. I also directly wired a 500mAh poly battery directly to the power pins of the ESP and I saw no indicator light.
I am seeking the minimal battery amperage (at 3.3 [3.7] vdc. My unknowledgeable self feels that the 18650 provides enough current (amperage) headroom to last for awhile until it drops below 3.3 vdc while the smaller LIPOs simply sputter and die . . . As I understand it.
Oh, yeah . . . I guess the 18650 is the way to go, as I am requiring long runtime hours and “continuous” BLE transmissions.