ESP32 and battery holder, TTgo Uno ESP32
With ESP32 we can expect a lot of interesting board for wireless connections - WiFi and Bluetooth.
We expect that the Wemos name on the board is maybe abuse of name.

There are two of them. The first dev board contains ESP32, battery holder for 18650 battery, microUSB connector.
The price is $10.29

The second dev board TTgo Wemos ESP32 D1 R32 includes headers compatible with Arduino UNO and it contains USBmicro connector and USB-UART bridge CH340 IC. Moreover contains DC barrel input.
The price is $7.10 and link to store is