Hello everyone. I was researching and I wanted you to give me your opinion. I have four 18650 (3.7v, 2200 mAh, each one) and I would like to make a 2S 2P battery pack. (7.4V - 4400 mAh) It would be possible in some way to charge these batteries with the PS2 AC-DC adapter that grants 8.5V, or the 900xx series psu that grants 7.4v, supplanting a smart charger? Every two batteries with their corresponding BMS of 2S. Thanks.