Mini Power Bank 18650 21700 Battery Charger Case Portable Mobile Phone PoverBank Battery Box DIY Mobile Power Pack Material Kit

Features:
1.[Multiple interfaces] Suitable for iPhone/TYPE-C/Cord, 3-in-1, straight socket suitable for iPhone/Cord is a TYPE-C cable, widely compatible.
2.[Small and Convenient] Only the size of lipstick, plug and play charging, designed with a strap and charging cable, emergency power bank, convenient to carry.
3.[Smart compatibility] Multi brand mobile phones and multiple devices are universal, supporting charging and playing at the same time.
4.[Battery model] supports 18650/21700 rechargeable batteries, unlike other models that only support 18650 batteries. No welding, it can be used by directly installing the battery. (The shipment does not include batteries, only the nested shell)
5.[Suitable for multiple scenarios] For travel/outdoor emergency/home/school use, etc Compact and convenient to carry without taking up space.
Note before purchase: the positive and negative poles of the battery cannot be connected reversely, and the board will be burned and scrapped if connected reversely. After the battery is placed, use it first. After the function test, it can be used normally, and then close the shell. The shell cannot be disassembled again. During assembly, the battery can be fixed with sponge Double-sided tape inside.