The DC 5V USB to 4.2V, 8.4V, 12.6V, 12V Step Up Charging Module with 5.5mm DC Jack is a versatile power conversion and charging module designed to increase a 5V USB input voltage to multiple higher voltage outputs for charging and powering different battery packs and electronic devices. Whether you’re building a portable power bank, charging lithium batteries, or powering embedded electronics, this module delivers flexible voltage options in a compact form factor.
Featuring a built-in boost converter circuit and a standard 5.5mm DC barrel jack output, this module can convert low-voltage USB power into selectable charging voltages such as 4.2V, 8.4V, and 12.6V, making it suitable for 1-cell, 2-cell, and 3-cell lithium-ion battery charging applications. It is also useful for powering low-power DC devices requiring a regulated higher voltage supply. Its compact design, easy USB input, and multiple voltage options make it suitable for DIY electronics, portable power projects, battery charging solutions, and embedded applications.
Key Features of the DC 5V USB Step Up Charging Module
- Converts 5V USB Input to Higher DC Output Voltages
- Multiple Voltage Selection Options:
- 4.2V for 1S Li-ion Battery Charging
- 8.4V for 2S Li-ion Battery Charging
- 12.6V for 3S Li-ion Battery Charging
- 12V DC Output Applications
- Built-In Step-Up (Boost) Converter
- Standard 5.5mm DC Barrel Jack Output
- USB 5V Input Compatibility
- Compact and Lightweight Design
- High Conversion Efficiency
- Suitable for Portable Power Applications
- Easy to Use with Battery Packs and DC Devices
Technical Specifications
- Product Type: DC Boost Converter Charging Module
- Input Voltage: 5V DC (USB)
- Input Connector: USB Type-A
- Output Connector: 5.5mm × 2.1mm DC Jack
- Output Voltage Options:
- 4.2V DC
- 8.4V DC
- 12.6V DC
- 12V DC
- Converter Type: Step-Up Boost Converter
- Battery Compatibility:
- 1S Li-ion / LiPo Battery (4.2V)
- 2S Li-ion / LiPo Battery (8.4V)
- 3S Li-ion / LiPo Battery (12.6V)
- Output Current: Depends on input supply and module efficiency
- Protection: Depends on module version
How the Boost Converter Module Works
The module uses a boost converter circuit to increase the 5V USB input voltage to a higher regulated output voltage. The conversion process works as follows:
- The 5V USB supply enters the boost converter circuit.
- The switching regulator increases the voltage level using an inductor and high-frequency switching control.
- The output voltage is regulated to the selected charging level.
- The DC jack provides the converted voltage for battery charging or powering compatible devices.
The selectable output voltages allow the module to be used with different lithium battery configurations, providing maximum flexibility for your projects.
Applications and Use Cases
- Li-ion Battery Charging Projects
- Portable Power Bank Systems
- DIY Battery Chargers
- Arduino and ESP32 Power Projects
- Robotics Power Systems
- LED Lighting Applications
- Small DC Device Power Supply
- Embedded Electronics Projects
- Hobby Electronics
- Battery Backup Systems
Advantages of This USB Step Up Module
- Multiple voltage outputs from a single 5V USB source
- Compact and portable design
- Convenient DC barrel jack output
- Suitable for different lithium battery configurations
- Easy integration into DIY projects
- Reduces the need for separate power supplies
- Useful for portable electronic applications
Important Usage Tips and Safety Guidelines
- Select the correct output voltage according to the battery configuration.
- Do not charge lithium batteries without a proper Battery Management System (BMS) or suitable protection circuit.
- Use a high-quality 5V USB power supply capable of providing sufficient current.
- Verify polarity before connecting any device or battery.
- Avoid exceeding the module’s maximum output current rating.
- Ensure proper ventilation during continuous operation.
- Always confirm battery specifications before charging.
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