Me and my friends are working on a project that requires a pretty long battery life. but since we can't fit any battery powerful enough in the project, we had to use a smaller one, but now, we have to charge it through piezoelectric crystals. Is this possible, if yes is there a board I can use for it.
I will be using: -3.7 V 600 mAH li po battery -10 piezoelectric generators in parallel. they each create 0.4 V