8*21700 Battery Case 22.5W Fast Charging DIY Battery Storage Box Solder-Free Power Bank Housing PD+ Flash Charge+ Fast Charge

Product Features:

1. Transparent Mecha Design: A sleek, transparent casing with a high-tech look that showcases the beauty of the internal structure

2. High-Capacity Support: Compatible with 8 21700 batteries, providing ultra-long battery life to meet high-power demands

3. Fast Charging Technology: Supports rapid charging with high efficiency, saving you waiting time

4. Solder-Free Installation: Modular design requires no soldering, making DIY assembly simple and convenient

5. Multiple Safety Protections: Built-in overcharge, over-discharge, and short-circuit protection ensure safe and reliable use

Product Specifications:

PD + Flash Charge + Super Fast Charge + Fast Charge Edition

Output Power: 22.5W

USB Output: 5V/3A, 9V/2A, 12V/1.5A (Simultaneous multi-port output is limited to 5V)

IN Input: 5V/2A

Type-C Output: 5V/3A, 9V/2A, 12V/1.5A (Output available only if the device supports the PD protocol)

Type-C Input: 5V/3A, 9V/2A, 12V/1.5A

Other Features: Long press to turn on the LED light; reverse installation won’t burn out the mainboard (one positive and one negative terminal will burn out the spring)

Operating Voltage: 3.3V–4.15V (Springs cause a voltage drop)

Capacity Requirement: The battery pack’s minimum actual capacity must not be less than 10,000 mAh; otherwise, the battery will be unable to deliver power even before the indicated charge level is fully depleted

If the phone’s proprietary protocol does not support fast charging (USB without fast charging), PD charging (Type-C output) can be used; the PD open-standard protocol provides more stable output

Fast Charging Specifications (Supported Protocols):

Integrated SCP 22.5W Super Fast Charging Output Protocol

Integrated 22.5W Flash Charge output protocol

Integrated QC 4.0+/QC 4.0/QC 3.0/QC 2.0 fast charging output protocols

Integrated FCP and AFC input/output fast charging protocols

Supports PPS, PE 2.0, and SFCP fast charging output

Supports PD 3.0/2.0 and PE 1.1 input/output protocols

Important Notes: This product is designed exclusively for 21700 flat-top batteries with a voltage between 3.5V and 4.2V. Batteries that are more than two years old or have undergone more than 300 charge cycles are generally unreliable. If you experience intermittent charging that lasts only a few minutes or ten to twenty minutes—or if the battery cannot fully charge a phone even halfway—these issues are caused by battery degradation and a charge rate that no longer meets specifications. Additionally, this product does not support modifications or soldering. We are not responsible for after-sales service if non-compliant batteries are used. The mainboard is equipped with a reverse-polarity protection chip; installing the battery backwards will not burn out the mainboard. However, since the spring contacts are integrated, battery casing damage, short circuits, or connecting positive and negative terminals in series will cause the springs to burn out. Once the battery is reinstalled correctly, the mainboard will continue to function normally and will not be damaged.

Package Contents:

Solder-free battery case *1 (battery not included)