Specification:Condition: 100% Brand New Item Type: Battery Box Holder Material: Plastic Color: Red Input Voltage: 12.6V Overcharge Protection Voltage: 12.6V Over-Discharge Protection Voltage: 8.4V Over-Discharge Protection Current: 9V Standby Current: 100ua USB Output Standard Voltage: 5V ± 0.2V USB Maximum Output: 2000ma Instructions for use: 1. The battery box is suitable for 2.5-4.2V 18650 lithium ion rechargeable batteries (please use batteries with the same capacity and the same model) 2. Connect the output port of the 12.6V charger to the round DC port of the battery box for charging 3. The DC circular port of the battery box is 12.6V, which can be output or input. The 5V USB port is only used for output and can be connected to digital products such as mobile phones and LEDs 4. The USB output reaches 2000mA, which greatly shortens the charging time. 5.Waterproof rating: IP67 6. Hook and loop makes installation easier and more convenient 7. This product has over-charge, over-current, over-discharge protection, battery anti-reverse protection., Balanced charging. Five protection 8. Charge batteries of different capacities of the same brand together, first charge the battery with a low capacity, then cut off the battery, and then charge the battery with a high capacity. Assuming that the 2000mA battery and the 3000mA battery are charged together, first charge the 2000mA battery, and then absolutely charge it, then charge the 3000mA battery again. 12V 6pcs battery box: Two interfaces, 12.4v can output input, 5v output, can be put into 18650 as a charger, can be used as a portable battery box, power supply for bicycle lights, USB lights, 12v LED lights, etc. Package List:1 x Battery Box