ST6845-C USB-C Booster Charging Module

The ST6845-C is a combined step-up booster and lithium battery charging/protection module built around a modern USB Type-C connector, making it a solid foundation for building a DIY power bank or any portable lithium-powered device. It takes a 3.7V lithium cell as input and boosts it to a regulated 5V output at up to 1A, ready to power USB devices directly from a single cell.

Beyond simple boosting, the module integrates full charge and discharge management on one board: it charges the connected lithium cell to a preset 4.2V with ±1% precision, stops discharging once the battery drops to 2.9V to protect cell health, and includes LED indicators that show charging and discharging status at a glance. Its internally installed charging and discharging power MOSFETs, combined with intelligent temperature control, over-temperature protection, output overvoltage protection, short-circuit protection, overload protection, and over-charge/over-discharge protection, make it a genuinely complete power management solution.

• Output – 5V 1A from 3.7V input
• Connector – USB Type-C
• Battery Discharging Stop Voltage – 2.9V
• Charging Voltage – Preset 4.2V, precision ±1%
• Standby Current – Max 8uA
• Protection – Over-temperature, overvoltage, short-circuit, overload, over-charge/discharge
• Indicators – Charging and discharging LEDs

Complete and well-protected, the ST6845-C USB Type-C Step-Up Booster Module is exactly what you need to turn a single lithium cell into a functioning power bank.