Dial USB LED Charging Dc 5.1A 30V Voltage Current Power Capacity Meter

body { font-size: 100%; color: #000; font-family: Open Sans,Arial,Heetica,sans-senif,SimSun,"宋体"; line-height: 1.3; } dl { margin: 0px; width: 480px; float: left; } dt { width: 100px; height: 15px; float: left; } dd { width: 240px; height: 15px; float: left; } dl dt { margin: 0px; line-height: 22px; color: #474747; font-size: 14px; font-family: tahoma; } #product-desc { width: 100%; height: 209px; } #descrtion { width: 100%; height: 50%; } #details { width: 100%; height: 50%; } .ui-box-title { height: 30px; font-size: 15px; font-family: tahoma; font-weight: bold; background-color: #ddd; text-anchor: inherit; padding-top: 8px; margin: 0px; } .ui-box-body { margin: 0px; } #tbspecifics { border-right: 1px solid black; border-bottom: 1px solid black; } #tbspecifics tr { height: 30px; } #tbspecifics td { width: 100px; border-left: 1px solid black; border-top: 1px solid black; } The USB is mainly d to detect USB charging current, voltage, discharge capacity, electric charge quantity, energy, time, etc.The USB can be applied to power storage capacity and protection against current and/or high voltage and/or low.It has been incorporated into each USB a circuit with CW3002D to accelerate fast charging.Besides, the smart system inside is designed to detect safety.This is also compatible with the high voltage 2.0/3.0 test and with the auto power off function when completing the charge to protect your valuable devices effectively.Made with a high quality LCD display and low power consumption function bright and clear enough to control the s of the screen. It comes with three different display modes. perfect for testing the capacity and electrical energy of external batteries, the maximum output current of the charger and charging speed and the quality of data and charging cables.Input / Output voltage:3V - 30V DC; Current range:0A - 5.1A.This portable USB is easy to carry as you can carry it in your bag or pocket wherever you go, awith the symmetrical and reversible connector that allows you to it easily.Accuracy: +/- 1%Display: LED; Display voltage and current simultaneously.Maximum capacity value: 99.999 mAh.colour:blackmaterial:ABSsize:60x24x18mmPackage Contents:1 * USB Only the above package content, other products are not included.Note: Light shooting and different displays may ca the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.