6 Sections 18650 Battery Multi-function Mobile Power Box with 12.4v Round Head & 5v USB Dual Voltage Output Without Battery(Black) Tag-Public Broadcasting Number of keyboards: 104 keys

Number of keyboards: 104 keys

3inch laptop

transmitter 8x4

TF card music playback

6 Sections 18650 Battery Multi-function Mobile Power Box with 12.4v Round Head & 5v USB Dual Voltage Output Without Battery(Black) Tag-Public Broadcasting Number of keyboards: 104 keys1. This battery box has XP67 waterproof function. 2. There is no need to spot welding the battery, which greatly reduces the internal resistance of the battery and improves the battery discharge performance, thereby effectively increasing the battery life. 3. Easy to use, using 6 18650 lithium batteries. 4. With DC connector input and output voltage 12. 4V. The USB connector has an output voltage of 5V and a current of 2A, which can charge the phone.