The rate at which any chargeable device will charge is dependant on a few factors. First, the device itself, he was fast can the port and battery accept the charge. Second, the wall or accessory portion of the system. What amperage is it rated at, how many ports are there drawing off that amperage. And third the cable, how much amperage will it allow to flow. Generally smaller diameter cables are lower amperage because they are to restrictive, more resistance. Like a Creek and a river, a Creek is smaller and less water flows. Also the length of the cable, the shorter the more power gets to the device, again because resistance will bleed some of the power out before it makes it to the device.
Now my fastest charging system I have is a car accessory USB 4 amp dual USB port. It auto senses so of I only have one plugged in, it pushes most of the r amps to the one port. I also have a large USB 3.0 cable. Both bought on Amazon. The charging speed is phenomenal. I have not had as much luck finding a larger amp charge plug for ac.
Posted via Android Central App