Max Input/Output Power: 18WBattery Charge Current:Fast Charge Trigger: Up to 4A (max)Critical Note: connecting wires between battery and module are short and thick.Protocol Support:Compatible Fast-Charge Protocols: PD3.0, QC3.0, AFC, FCP, PE2.0Tested Compatibility:Type-C port supports for Fast Charging ( with for 16PM; requires cable).Excluded Protocols: VOOC/SCP (does not support currents 3.5A).for Note: Supports FCP but not SCP.Battery Configuration RecommendationsFor 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: 2.5AFast 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 :Activates Type-A port and light-load Type-C port for discharge.Enables power level display.Double :Deactivates Type-A/Type-C ports and power display.With External Power: Only disables output ports (display remains active).Color: BlackMaterial: PCPackage Contents:1 x Fast Charging ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.