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22.5W Type-C Li-ion 18650 Battery Charging Circuit - Power Bank Module
22.5W Type-C Li-ion 18650 Battery Charging Circuit - Power Bank Module
The 22.5W Type-C Li-ion 18650 Battery Charging Circuit - Power Bank Module is a compact power management board designed to create a portable fast charger using single-cell Li-ion or Li-Po batteries with a nominal voltage of 3.7V.
The module operates with a 1S (single-cell) 3.7V lithium battery system and is compatible with 18650 batteries that have a full-charge voltage of approximately 4.2V. If multiple cells are used, they must be connected in parallel. Series connection is not supported, and higher battery voltages may damage the module.
The board features a bidirectional USB Type-C connection. When an external fast-charging adapter is connected, the Type-C port acts as an input to charge the battery; conversely, when used as a power bank, the same port provides output power to connected devices.
The board also features a high-current USB-A output.Specifications
- Maximum Output Power: 22.5W
- Battery Configuration: 1S
- Battery Nominal Voltage: 3.7V
- Fully Charged Battery Voltage: 4.2V
- USB Type-C: Bidirectional input/output
- Maximum Charging Current: Up to 5A, depending on operating conditions
- Maximum Conversion Efficiency: Up to 96%
- Typical Overall Efficiency: Up to 95%
- PD Support: PD2.0 / PD3.0
Supported Fast Charging Protocols
- PD2.0
- PD3.0
- PPS
- QC2.0
- QC3.0
- QC4.0
- AFC
- FCP
- SCP
- VOOC
- DASH
- WARP
- PE1.1
- PE2.0
- SFCP
- HSCP
- BC1.2 / Apple 5V 2.4A
