DIYMORE Super headlight detachable 21-section welding-free 18650 battery box DIY

Features: 1. [Large Capacity] Can hold 21 18650 batteries (flat head), output/input maximum power 5V-2A. (The delivery battery is not included) (The delivery battery is not included) (The delivery battery is not included) 2. [Multi-function and multi-interface] Battery display/power button, 4*USB output port+1*MICRO interface+1*applicable ios interface+type-c interface. 3. [Super headlight] The bottom is equipped with 9 LED lamp beads, which can illuminate. There are three modes. Press and hold the button for 2S to turn on/off. Press and hold the button and then click to switch between slow flashing/quick flashing/steady light mode. 4. [Detachable] The shell is fixed with screws and can be disassembled at any time to replace the battery, unlike general DIY nests that cannot be disassembled. 5. [Applicable to various scenarios] Handle design, easy to carry, suitable for home use, outdoor enthusiasts, DIY enthusiasts, etc... Simple operation and easy disassembly. Notice: Batteries have a life cycle. The installed battery must be in good condition and has no broken skin. The voltage must be between 3.2V and 4.2V. The internal resistance of the battery will increase after being used for a long time. If the internal resistance is too high, it will affect the normal upgrading of the motherboard. Voltage and high-power output load current limit, remember not to use old/broken batteries, or batteries with poor virtual capacity. This product is a semi-finished product that is easily damaged, so it is prohibited to drop it. Check the positive and negative terminals of the battery before putting them in. Use a flat-head 18650 battery. Wrong insertion will cause the motherboard to burn out, or even cause an explosion. Remember, you need to be DIY-friendly when purchasing this product. You have a certain understanding of battery box products. If you don’t understand, buy with caution. Please consult customer service before purchasing!!!!!!!! parameter: Output/input power: 5V-2A External dimensions: 18.7*8.2*6.4cm Internal size: 12.8*7.2*5.4cm Applicable batteries: Can hold 21 18650 batteries (flat head) (the delivery battery is not included) (the delivery battery is not included) (the delivery battery is not included) Cut-off voltage after the battery is discharged: 3.3-3.4V PD fast charging: not supported Product List: 21-section mobile power supply set*1 (The delivery battery is not included) (The delivery battery is not included) (The delivery battery is not included)