LED Display Screen 21700 Battery Case 4X21700 Support Power Bank Shell PD Power Bank Kit Home Use

Label:Yes Size: As Shown Battery requirement: Only for 21700 batteries (21*70mm), 3.5-4.2V. Minimum real capacity ≥10000mAh. Material: Plastic, Electronic Components Color: Black Frame with Transparent Shell, Orange Frame with Transparent Shell Type: DIY Power Bank Enclosure Lightning Input: 5V/2A Max charge current: 5A; Synchronous boost efficiency up to 95%. USB-A Output: 5V/3A,9V/2.5A,12V/1.87A (Only 5V when multiple ports work simultaneously) Brand New and High Quality Multiple safety protections: Over-voltage, under-voltage, over-current, short-circuit, over-charge, over-discharge & over-temperature protection Name: Transparent Solderless Power Bank Case Kit Built-in LED light (long press to turn on/off) Max Output Power: 22.5W (Peak 25W) Type-C Input: 5V/3A,9V/2A,12V/1.5A (Supports pass-through charging) Supported Protocols: PD2.0/3.0, QC2.0/3.0, Huawei SCP/FCP, Samsung AFC, BC1.2 Type-C Output: 5V/3A,9V/2.22A,12V/1.67A (PD protocol required for fast-charge output) Battery Compatibility: 4 x 21700 Batteries

Package Includes: 1PC Power Bank Case Kit, Batteries Not Included

Important Notes for Buyers: 1.This is a DIY circuit board, battery is NOT included. Only use qualified 21700 lithium-ion batteries (3.5-4.2V). 2.Worn batteries (over 2 years old, more than 300 charge-discharge cycles) perform poorly: short runtime, intermittent charging. These are battery issues, not board defects. 3.If your phone's private fast-charge protocol is not supported, use the public PD protocol via Type-C output for stable charging. Soldering / modification is NOT allowed. No after-sales service for damage caused by improper batteries or modification. 4.The mainboard is anti-burn. But damaged, short-circuited or incorrectly installed batteries may burn the spring contacts. Re-install proper batteries, the mainboard can still work normally. 5.First-time use: Charge batteries to 100% and keep charging for extra hours for cell balancing.

Features: 1. Solderless Assembly: Designed for battery installation without soldering, making assembly and battery replacement more convenient 2. Transparent Enclosure: The clear shell displays the internal circuit board and creates a distinctive mechanical appearance 3. Multiple Charging Protocols: Supports several common fast-charging protocols for compatible mobile devices 4. Digital Power Display: The integrated screen provides a convenient view of the remaining battery level 5. Integrated LED Light: Built-in lighting along the enclosure provides an additional illumination function 6. Removable Battery Box: The detachable structure allows convenient access to the internal battery compartment

Tips: 1. Due to the light and monitors effect, colors may have lightly difference 2. Please allow slightly size errors due to manual measurement. Thank you for your understanding!