RD TC66 TC66C Type c usb meter operation, accuracy, PD trigger instruction

[@andrewh5640]

How can I test actual capacity of power bank (mAh) using TC66? I have power bank with 0%. Can I charge it and plug TC66? How to calculate battery capacity that way? Thanks

[@frobro5095]

please help us tc66c is not working upgrade ?
internet connection problems this issue 😔

[@frobro5095]

Bro help us 😥
TC66C firmware new upgrade 1.18v
but is a problem 👇
Firmware network download failed!