ITEM NAME:DC Adjustable Display Step-down Buck Power Charger Module Voltmeter Ammeter 5A Descriptio n.Output current: adjustable maximum 5A. We'd like to settle any problem in a friendly manner. Load Regulation: Â ± 0.5%. Display: 0.28"digital tube. Output ripple: 500mV (max) 20M bandwidth. Input impedance: 50 milliohms.