Unlikely, the load balancing and other values are transmitted through the cable, the battery firmware should prevent the phone from starting, or prohibit charging if there is only one battery signal.@shaycac6
The 5 series has been discontinued for a long time, difficult to find it new, it is new, refurbished, used?
At this level of autonomy (2h), the current google play bug or the calibration of the battery cannot be the only cause, 2000mAh of consumption would cause the temperature of the phone to explode. Difficult to make a diagnosis with this single well linear graph, on a battery at the end of its life, the graph will suddenly drop from 70-50 to 0.
Test the battery with the calculator code +12345= but hey, it would be wiser to ask for a refund.