I have a ttgo t5: http://www.lilygo.cn/prod_view.aspx?TypeId=50031&Id=1149&FId=t3:50031:3 http://www.lilygo.cn/prod_view.aspx?TypeId=50031&Id=1149&FId... Seems

I have a ttgo t5: http://www.lilygo.cn/prod_view.aspx?TypeId=50031&Id=1149&FId=t3:50031:3 http://www.lilygo.cn/prod_view.aspx?TypeId=50031&Id=1149&FId... Seems to match what you are looking for, with an esp32, an e-ink display and a battery connection. It is also quite cheap. I use mine as a weather station.