Performance parameters 1, the input / output current: 0A- 3A 2, input / output voltage: 3V-30V 3, the test capacity range: 0-99999 mA 4, accuracy: ± 1% 5, the test: voltage, current, discharge flow 6. Timing: YES 7. The over-current protection: Yes 8. Packaging: opp bag 9. Package list: 1*Usb voltmeter detector The use Power display current and voltage, a single short press the button for about 0.5 seconds to view the capacity and timing screens. When displayed on the screen press capacity around button for two seconds to clear the stored data. When the display screen at the timing of the long press button for two seconds will be flashing numbers, and then press a single button for 0.5 seconds each time the cumulative 0.5 hours per block long press 2 seconds to confirm the save. Battery capacity test: Use TP4056 and other linear charging circuit through this capacity to the table completely empty battery is fully charged to full capacity reading on the battery capacity, the use of this method can be measured charge capacity of the phone, the phone can even calculate theharging efficiency Mobile measuring power output capacity and efficiency: The first machine connected mobile power, mobile power turn on, long press the button until the volume of data to zero, into the phone and more mobile power charging until no power automatically shut down. Next displayed when you turn the unit capacity is the mobile power output mAH. MicroUSB line quality measurement: female plug mobile phones and other devices, first use the native male plug 5V chargers, remember that voltage, then MicroUSB cable into the bore in mind that the machine MicroUSB charger voltage from 5V, the smaller the gap voltage MicroUSB cable quality is better
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