I have two 16,000 mAh power banks with 5V1A and 5V2.4A output ports on both. One circuit board was damaged, but the batteries are okay. If I solder it into the other circuit using parallel, will it function the same with twice as long of a life? And how will this affect the battery display? It's just 4 lights to simulate the charge level in increments of 25%. No, I don't know what kind of batteries they are.