16V Input 5V Output Battery Box 4 x 26650 Battery Pack Power Supply Dual Interface Waterproof Large Capacity gray

Feature: 1. 1. This battery box features XP7 waterproof function. Two interfaces, 16v can be input and output, 5v output, can be put into 18650 26650 as a charger, can be used as a portable battery box, charger, power supply for bicycle lights, USB lights. 2. 2. There is no need to spot weld the battery, which greatly reduces the internal resistance of the battery, improves the discharge performance of the battery, and effectively improves the battery life. 3. 3. Easy to use, use 4 pcs 18650 26650 lithium batteries. 4. 4. With DC connector input and output voltage 16V. The output voltage of the USB connector is 5V and the current is 2A, and it has the function of charging the mobile phone. (The voltage of battery input and output has an err