Is there any dont's about changing the cellpack with another? That is... I got two batteries, one with faulty cellpack, and one with faulty electronics. Can I change? Im used to weldning (two cables only). Im aware of the fire hazard. Another question... the first battery is a original DJI 5200mAh LiPo and the other is a 5400 mAh Ttongr-LiPo. I would discharge these and throw them, but the owner really wants one to work.