Max Input/Output Power: 18W Battery Charge Current:Fast Charge Trigger: Up to 4A (max) Critical Note: Ensure connecting wires between battery and module are short and thick. Protocol Support:Compatible Fast-Charge Protocols: PD3.0, QC3.0, AFC, FCP, PE2.0 Tested Compatibility:Type-C port supports for Apple Fast Charging (verified with for iPhone 16PM; requires cable). Excluded Protocols: VOOC/SCP (does not support currents Greater than 3.5A).for Huawei Note: Supports FCP but not SCP. Battery Configuration Recommendations For optimal performance, use 4 x 18650 batteries in parallel (high-capacity configuration strongly advised). CC/CV Charging Workflow (4.2V cutoff example): Trickle Charge Mode (Battery Less than 3V): Charges at 300mA until voltage exceeds 3V. Constant Current (CC) Mode (Battery ≥3V): Non-Fast Charge Adapter: 2.5A Fast Charge Adapter: 4A (max) Constant Voltage (CV) Mode (Battery =4.2V): Current gradually decreases until reaching -300mA (charge termination). Auto-Recharge: Activates if post-charge voltage drops below 4.1V. Button K FunctionsShort Press:Activates Type-A port and light-load Type-C port for discharge. Enables power level display. Double Press:Deactivates Type-A/Type-C ports and power display. With External Power: Only disables output ports (display remains active). Color: Black Material: PC Package Contents: 1 x Fast Charging Module