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Battery Backup

Q&A Forum › Category: Other › Battery Backup
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self.raymond asked 6 years ago

I want to power my esp with a 5v power supply.  I also want to have a lipo battery as a back up so the esp will always have power.  So in theory I want to charge my lipo battery with the main voltage of 5 volt.  I can do this with the TP4056 Board.  But still take the mains 5 volt supply to the vin of the esp board.  Can this be done?

Thanks for the help

Ray
 

1 Answers
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Rui Santos Staff answered 6 years ago

Hello Ray. Yes, it’s possible to do that, but unfortunately I don’t have any tutorial on that subject…

I only have an ESP32 powered with LiPo batteries and I use solar panels to re-charge it: https://rntlab.com/lora-long-range-sensor-monitoring-and-data-logging-part-1/

I’ve found this Forum topic where the users discuss how to implement a circuit that does what you’re looking for: https://forum.arduino.cc/index.php?topic=496727.0

If you search for “Battery Backup circuit TP4056” or “Power failure battery backup”, you’ll find some results that might be able to help you implement that circuit.

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