Battery fried?

Hi, i am unable to connect to my sensor after trying all the typical tricks. I opened it up and read the voltage reading between the GND and BAT+ terminals and found there was no power getting to the board, even though the battery had been charged.

I exposed the terminals of the battery and found 2.17V across the battery terminals, but no voltage across the black and red cable (see attached picture). Is there a fix? THanks!


  • edited August 2021

    Looks like the battery over discharged. You have to jump it now like a car battery (the protection circuitry is preventing it from charging). You can do that if you have a Power supply handy. Let me know.

  • I do -- what settings do you recommend?

  • 4.2v 50ma constant current (be careful)

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