@jchipjonty Thank you for your response. You are absolutely right it doesn't look very good. It looks like all text is in bold 12 and accented characters in plain text 10. Not a very elegant solution. Regards Carles

I have both a M5Stack Core2 and Lora868 moduel infront of me right now. The core module has been disassembled in 2 parts (3 considering the sensor module by removing the 4 screws. To do so I also disconnected the 2 whire battery connection between the battery, sticked to the grey backplane module and the main board. Now the Lora blue module can be connected to the main core board (the white one). It fit perfectly. Now it is the turn of the back plain but I can see at least two problems here: there's no way to connect the battery back to the mainboard now that the lora module is in between. Maybe I can drill the lora board PCD and sacrifice a couple of empty pcb vias there or add an additional couple of wire segments to go through them. the battery or the grey plastic frame on the back plain mechanically hit the Lora module metal shield. This second one seems more difficult to fix. The result is that the backplane cannot be reconnected to the sandwich if the Lora module is in between. Any idea? Are a couple of photos useful here?

Thanks again @world101 I have seen it. But I think it would have to be in the model documentation, if it is I missed it. Have a nice day Carles

@wa-berlin said in Core2 how to know the current battery level: batPercentage = ( batVoltage < 3.2 ) ? 0 : ( batVoltage - 3.2 ) * 100; micropython welcome : batPercentage=0 if batVoltage<0 else round((batVoltage-3.2)*100) lcd.print(str(batPercentage)+"%",0,0) ;-)

Thanks again @world101 , solved. Ho I'm really bad looking for M5Stack documentation, or documentation is missing.

@carles-b Great. Glad you got it sorted out and can begin enjoying M5Stack 😀