A vehicle rear door unsequenced articulating mechanism including one or more articulating hinge assemblies having one or more hinge arms pivotally mounted to a vehicle C-pillar at one end thereof via a C-pillar hinge mount and pivotally mounted to a vehicle rear door at another end thereof via a door hinge mount. The adjustable collar has a rubber-like strip which has a strap affixed to its outer face. A processor is coupled to the sensor, and is configured to determine an offset from balancing of the battery pack, and calculate an adjusted value of the voltage of the cell using the preliminary value and the offset.