This seems to be a reaction to my post above, i forwarded it to Lilygo. That means my assumption battery has direct connection to 5V USB was validated by them.
Unfortunately another fatal design flaw and poor quality management seen at a chinese manufacturer…
I received same mail today.
This is really dangerous. If i would have left the board with battery and USB connected unattended, my flat would probably had burned down. And i used a small 3Wh battery only. That’s far less than e.g. a common 18650 cell…
good afternoon , i am trying to go down the ttgo v1 consume … in this moment i am in 8.7 ma ; i remove the leds license plate and the battery charger … someone Has anyone been able to lower this consumption?
In the TTGO v1.6 design power from USB and battery runs over a diode (at least it should, when the did not accidently used a fuse). That means that we give about 0,1 Watt of power at this early point in heat, even before it arrives at any circuit…
From my understanding I thought that if you plug in the TTGO via micro USB it simply charged the battery and you are good to go, but it doesn’t seem to be the case with my testing.
Has anyone had any experience with powering this board using a battery? If so, could you please tell me what you had to do to get it working.
Thanks in advance.
Attached below are photos showing my setup for reference:
Sounds like a plan! Just interested… What are the operating voltages used for the TTGO when connected to the battery? I guess it’s 4.2V at a max, but how low can this drop to and still allow the board to operate?