This will explain how I enabled deep sleep to be used on the Wemos D1 Battery Shield. There was very little information available on this device, so I will outline the relatively simple process below.
As per the image above, remove the blue led directly above the Wi-Fi symbol. Once done, solder a wire between the RST pushbutton leg and GPIO16 of the WROOM02 ESP module.
In order for the WROOM02 to wake from deep sleep, GPIO16 must be tied to RST.
KestrelMet 6000 ESPHome Complete ConversionAugust 28, 2023