21700 Battery Case 22.5W Fast Charge DIY Power Bank

This 21700 battery case features a transparent, mecha-inspired shell showcasing its internal structure, merging style with tech innovation.

It supports up to eight 21700 batteries, delivering long-lasting power to meet demanding energy needs.

Equipped with 22.5W output, this case supports multiple fast charging protocols like PD3.0, QC4.0+, SCP, FCP, and more for broad compatibility and efficient charging.

• USB output: 5V/3A, 9V/2A, 12V/1.5A
• Type-C output supporting PD protocol
• Supports PD, QC, SCP, FCP, AFC, PPS protocols

Designed for DIY enthusiasts, the battery case employs a solder-free modular design, simplifying battery installation without welding.

Comes with built-in protections against overcharge, overdischarge, and short circuit, assuring safe and reliable use.

• Solder-free installation, easy DIY assembly
• Anti-installation chip prevents damage if installed incorrectly
• Long press LED light for convenient illumination

Compatible only with flat 21700 batteries rated between 3.5V to 4.2V and minimum 10,000mAh capacity.

Using aged or low-quality batteries (over 2 years or 300 cycles) may reduce performance or cause intermittent charging issues.

• Do not modify or weld components
• Reverse battery installation will not damage motherboard
• Ensure battery meets capacity and voltage requirements

• Output Power: 22.5W
• USB Output: 5V/3A, 9V/2A, 12V/1.5A
• Type-C Input: 5V/3A, 9V/2A, 12V/1.5A
• Effective Voltage Range: 3.3V-4.15V

• 1 x Solderless 21700 Battery Case (color of your choice)