Our ESP32-DevKit-LiPo board is pin to pin compatible with Espressif ESP32-DevKit, but we add to it LiPo battery charger, so the board can operate from LiPo battery like BATTERY-LiPo1400mAh
High resolution of the above GPIO map is available here.
Having LiPo backup power supply allow WiFi/BLE connected handheld devices to be created with ESP32-DevKit-LiPo.
In our new Revision B of this board which is on prototype stage:
If PWR_SENS_E1 jumper is shorted your software can monitor if external power supply is attached or you work on battery.
If BAT_SEND_E1 jumper is shorted your software can read battery voltage.
When operating on battery low power is necessary, so we optimized the design of Revision. C to reduce power consumption as much as possible and here are the results:
ESP32-DevKit-LiPo powered by Li-Po battery (no LED)
- normal mode: 35mA +/-10%
- deep sleep mode: 0.065mA +/-10%
ESP32-DevKit-LiPo powered by 5V USB (LED up)
- normal mode: 35mA +/-10%
- deep sleep mode: 2mA +/-10%
olimex 
Apr 22, 2020 @ 18:15:41
Hello, where can be found more info about reading battery voltage, when BAT_SEND_E1 jumper is shorted?
Jul 22, 2020 @ 09:52:36
REV C SCHEMATIC is available ????