USB DC Dial Charger Battery Capacity Voltage Current LCD USB 3~7V Meter For S

LCD USB DC Dial Charger Battery Capacity 1. Product Features:Simultaneous display of voltage and current and mAH data for easy viewingCan detect mobile power output mAHMulte sets of test data are saved, power-down save functionDoes not affect data nsmiionHigher precision, the current s will not jumpUSB male and MicroUSB ports are dual-powered to detect MicroUSB line qualityCurrent sampling 25 millis, le loWith precision current calibration, current accuracy is higher (it has been calibrated at the time of shment)2.performance s:Input voltage: 3V-7VVoltage resolution: 0.01VTest current: 0.05A-3.50ACurrent resolution: 0.01ACapacity range: 0-19999mAH3. function introduction:3.1 measuring voltage and current:The USB male plugs in the 5V charger, and the female socket is inserted into the mobile phone and other devices to directly read the voltage and current s.3.2 Measuring the quality of the MicroUSB line:Insert the mobile phone and other equment, first the male plug of the machine to plug in the 5V charger, remember the voltage, then the MicroUSB cable to plug in the MicroUSB hole from the 5V charger. Remember the voltage, the smaller the voltage gap, the better the quality of the MicroUSB cable. .3.3. Measure the output capacity and efficiency of mobile power:First connect the unit to the mobile power, turn on the mobile power, pre the on until the capacity data is zeroed, insert the phone to charge multe times until the mobile power is turned off automatically. The display capacity is the mAH of the mobile power output when the unit is turned on time. Note that this mAH is much smaller than the nominal mAH, output mAH* output voltage 5V / battery mAH * battery voltage 3.7V = mobile power efficiency.3.4 Data switching:he on to switch to the set of data, and double-he on to switch to the previous set of data.3.5 Data cleared:Pre and hold the on for more than 3 seconds to clear the group data.