The Power Bank KeepAlive (USB-C) prevents power banks from automatically shutting off when connected to low-power devices. It uses a 555 timer circuit to pulse a small amount of current through the USB-C port, keeping the power bank active even when drawing minimal power.

This assembled SMD version uses dual USB-C female connectors — connect it between your power bank and device using USB-C to USB-C cables. The data lines pass through unaffected, so charging and data transfer work normally. No soldering required.

Key Features

• Keeps Power Banks Alive – Prevents auto-shutoff with low-power devices
• 555 Timer Circuit – 50% duty cycle, ~10mA average with ~100mA pulse
• Dual USB-C Female – Both ports are USB-C for cable-based connection
• Data Pass-Through – Data lines connected directly and unaffected
• Ultra Compact – SMD construction for minimal size
• Pre-Assembled – Ready to use, no soldering required

Ideal For

• Powering Raspberry Pi Pico and small microcontrollers from power banks
• Low-power IoT devices on portable power
• Charging low-draw devices like earbuds

Package Contents

• 1× Assembled KeepAlive (USB-C version)

Resources

• Documentation
• Troubleshooting Guide