1. [No need to weld 3 x 18650 batteries] It can accommodate 3 x 18650 batteries (flat head) (not included), and the appearance design can charge 4 devices simultaneously, supporting charging and discharging at the same time. 2. The LED flashlight is both a power bank and a lighting fixture, with 2 * high-power dual lights and strong lighting effects, suitable for outdoor/evening emergency lighting. 3. [Comes with 4 cables] USB cable+TYPE-C cable+Micro-cable+suitable for IOS cable, convenient for going out without carrying additional cables. 4. [Portable Handheld] Comes with a lifting rope for easy carrying, can be hung on a backpack, and can be carried while charging without taking up space and affecting the use of the phone. 5. [LED display screen] Observe the battery level and usage at any time, and promptly recharge the power bank. Attention: The battery needs to be purchased separately with a 18650 (flat head) battery for installation before it can be used. Note that the battery capacity must be consistent. Do not invert the battery as it will damage the motherboard. (The spring is the negative pole and the spring is the positive pole) Please insert it correctly. After testing, cover the outer . There is no chance of secondary disassembly, and the outer cannot be disassembled again Input:5V2A Output:5V2A Cell model:18650 x 3 Input port:TYPE-C+USB port Input cable:USB cable Output cable:TYPE-C+Micro-cable+suitable for IOS lines PD:Not supported Colour:A:Black Material:ABS Package Contents: 1 * charging box kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.