Portable 8*18650 Power Bank Case with Built-In Speaker Fast Charger No Welding DIY Shell

Attention: 18650 batteries should be flat headed, and the positive and negative electrodes should not be installed upside down. Damaged and old batteries can affect the effectiveness of use or cannot be used directly. Please choose a new, consistent capacity, high-quality ternary lithium battery with a capacity of 3.7V or above for use. Features: 1. [Multi functional] Bluetooth speaker+power bank function in one, can be charged to listen to music, and can also be used as a flashlight for lighting. 2. [Powerful] The speaker has good sound quality, LED digital display, and knows the battery level at any time. It supports TWS pairing, not only Bluetooth, but also USB/TF card connection. 3. [22.5W fast charging] The fast charging output USB interface allows multiple devices to charge simultaneously, intelligently matching current without damaging the device. It is configured with 2 * fast charging USB interface+1 * MICRO input interface+1 * Type-C input interface+1 * suitable for IOS input interface 4. [Suitable for multiple scenarios] Office meeting rooms/outdoor sports gatherings/daily household use, etc 5. [8 * 18650 Battery] Simply insert the 8 * 18650 battery to provide power. It is fixed with screws, detachable, solderless, and can be used directly by inserting the battery, making it convenient and fast. Parameters: Can be installed with battery cells: 8 * flat 18650 battery PD functional parameters: Any USB port can support fast charging, and when using two or more output ports simultaneously, only 5V is supported. Fast charging specifications: Integrated QC2.0/QC3.0 Output Fast Charging Protocol Integrated FCP (Huawei High Voltage Fast Charging Protocol) Input/Output Fast Charging Protocol Integrated AFC (Samsung Fast Charging Protocol) input/output fast charging protocol Integrated SFCP (Spreadtrum Fast Charging Protocol) Input/Output Fast Charging Protocol Integrated MTK PE+1.1&2.0 (MediaTek Fast Charging Protocol) Output Fast Charging Protocol Integrated USB C DRP protocol, supporting input-output fast charging Compatible with BC1.2, Apple, and Samsung mobile fast charging Integrated USB Power Delivery (PD2.0/PD3.0) protocol Supports PD2.0 bidirectional input/output protocol Supports PD3.0 input/output, PPS output protocol Supports 5V, 9V, 12V voltage input/output PPS supports 5-11V Output current capacity: 5V/3.1A; 9V/2.0A; 12V/1.5A Color: Black/White Packaging list: 1 * 18650 mobile power supply nesting