8×21700 Battery Case with 22.5W Fast Charging Support

This battery case features a stylish transparent mecha design, showcasing the internal layout and electronics with a modern high-tech look.

Its clear casing allows you to monitor the battery arrangement and condition at a glance, adding both aesthetics and functionality.

Designed to hold up to eight 21700 flat-top batteries, this case delivers extended battery life to power high-demand devices.

It supports multiple fast charging protocols including PD 3.0/2.0, QC 4.0+, SCP 22.5W super fast charge, Flash Charge, FCP, AFC, PPS, PE 2.0, and SFCP for rapid and efficient charging.

Featuring a modular solder-free design, this battery case simplifies DIY assembly and maintenance without requiring soldering skills.

The mainboard includes a reverse-polarity protection chip preventing damage if batteries are installed incorrectly, enhancing safety and user confidence.

• No soldering needed for DIY setup
• Protected mainboard against reverse battery installation

Equipped with integrated protections for overcharge, over-discharge, and short circuits to ensure safe and reliable operation under various conditions.

The design also includes spring contacts that prevent damage with correct battery orientation but may burn if terminals are shorted or batteries connected improperly.

• Overcharge and discharge protection
• Short circuit protection for safe usage

Output power rated at 22.5W with USB outputs supporting 5V/3A, 9V/2A, and 12V/1.5A.

Type-C port supports both input and output at 5V/3A, 9V/2A, and 12V/1.5A, complying with the PD protocol for stable fast charging.

Operating voltage between 3.3V and 4.15V, compatible exclusively with flat-top 21700 batteries from 3.5V to 4.2V voltage range.

Includes one solder-free DIY battery case designed for 8×21700 batteries (batteries not included).