[electromovil]

Hi guys!!
I´m building a 48v from 2 or 3 differents batterys pack ( lime, bird etc...) and I saw some videos telling the batterys have to be toghether in series deppending the discharge rate and the same voltage, can anyone give me a video link or some instruction of any help please.

Will be a 13s6p mostly NCR18650BD.

THANKS