All outputs on QIKPAC Batteries are overload protected. Due to the large output capacity of a QIKPAC battery, you would need to be using more than all 8 USB ports of 4 x TUF-HPs, at full capacity, to come close to overloading it. If a QIKPAC battery has been overloaded, the output will shut off and the orange button will need to be pressed to reconnect power to this port. Due to the design of the QIKPAC battery, triggering the overload shutdown will not harm the battery.