In this video, I will show you how you can make a circuit that automatically switches between using the battery power or the input power. It can also save your battery from overcharge, hence preventing a fire hazard.

Pictures and more: https://www.instructables.com/Load-Sh...

Parts List:
IN:
IRF4905 (1 pcs) - https://amzn.to/3KYi5tO
IRF4905 (10 pcs) - https://amzn.to/3KVOuB2
1N5819 - https://amzn.to/3uPulqI
Float Sensor - https://amzn.to/3Eo9DBn
TP4056 - https://amzn.to/3uPKiNK
MT3608 - https://amzn.to/3uOyQBK

US:
IRF4905 - https://amzn.to/3EkBnHc
1N5819 - https://amzn.to/3vnqdgE
Float Sensor - https://amzn.to/3EjttOh
TP4056 - https://amzn.to/3KMvnJA
MT3608 - https://amzn.to/3vo4Eg2

UK:
IRF4905 - https://amzn.to/3rwWAZn
1N5819 - https://amzn.to/37TMESC
Float Sensor - https://amzn.to/3OhylYC
TP4056 - https://amzn.to/3ry6MAx
MT3608 - https://amzn.to/3uPKxbC

Some useful links related to Load Sharing:
https://www.best-microcontroller-proj...
https://forum.arduino.cc/t/proper-usa...
http://ww1.microchip.com/downloads/en...
https://blog.zakkemble.net/a-lithium-...