All i can tell you is that is what i had to do to get them to play together nice. I dont know if they just needed to cycle a few times to clam them down or what. Maybe others will tell you differently. All i can share is real life experiences. Also to say again , Battleborn batteries are the best. Just as a reminder, you still need to top balance them before you hook them up 2P/2S just like any other battery. Very important do this step to get the most out of your batteries.Yikes! That makes me a little timid! So, if I hear you correctly: I should hook 2 of them up in series and run them on the charge controller with a load then do the same with the other two before putting them 2s2p?