Adjustable battery owner enables to maneuver the batteries front side and rear but also left to right for simple and comfortable weight transfer modification. The owner permits to move the battery pack which changes the Front/Rear weight stability by 4mm. The brass material adds extra 7.5g weight for tuning the side-to-side stability weight to your battery side for tuning side-to-side balance. Design of this battery pack owner eliminates any negative framework flex.