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22.5W Fast Charging Power Bank Kit DIY Box Shell

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Efficient 22.5W super fast charging with type-C bidirectional input/output.

Multiple built-in protections and real-time digital battery display.

Lightweight, portable, and no welding required for easy DIY assembly.

Color

Clear

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Estimated Delivery Time3–7 business days

Advanced Fast Charging Technology

This DIY power bank kit supports 22.5W super fast charging, enabling efficient and rapid device charging to save your time. It includes a Zhirong S620 fast charging chip compatible with mainstream public protocols like VOOC and PD20W.

Type-C bidirectional input and output allow versatile compatibility with various devices, supporting fast charging into and out of the power bank.

User-Friendly Welding Free Design

The kit uses a no-welding required motherboard designed to hold two 21700 batteries in parallel. This makes assembly straightforward and accessible without technical soldering skills.

Clear positive and negative markings inside the battery compartment ensure proper battery installation. Anti-reverse protection helps prevent damage from incorrect polarity installation.

Comprehensive Safety Protections

The main board includes multiple protections: overcharge, overdischarge, overvoltage, and overheating safeguards provide reliable, safe operation.

High conversion efficiency and stable current ensure consistent power delivery and device safety during charging.

Digital Battery Level Display

Real-time battery level is shown on an LCD screen for easy monitoring of remaining power.

The display activates upon charging input or output and calibrates after several cycles for accurate readings.

Compatibility and Battery Recommendations

Compatible with two 21700 battery cells (batteries not included), suitable for low internal resistance batteries with intact outer skin and stable voltage.

Use of batteries with high internal resistance or damage can cause unstable voltage and power interruptions. Proper battery choice is essential for optimal performance.