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Instruction manual: Measuring voltage and current: USB plug into any USB port on, female plug cell phones and other devices, read out the voltage and current parameters directly Mobile measuring power output capacity and efficiency: With resistance dummy load is recommended to use, USB male plug portable power, female insert dummy load, until the fully charged mobile power discharge end undervoltage shutdown. The next show is the mobile power output capacity Ah and Wh when opening the machine. ZY1230 edition accelerate the use of smart identification Charging: If it is the official charger, such as Samsung Chargers Apple, or via computer USB, charging giant slow speed may even refuse to charge, then you can set the smart identification accelerated charge, switch to function 3, there are icons that function, press Lightning icon button switches to battery (fast charge mode) can be. Note that it is impossible 1A charger output, energy conservation 2A oh. Mobile computing power battery capacity and efficiency: Ah data x output voltage ÷ ÷ battery voltage mobile power battery efficiency = Ah (output voltage is typically 5V, you can view the average voltage capacity of the table of the second screen, the battery voltage is generally according to 3.7V, the general efficiency by 85-90%, I shop in high-end mobile power supply by 95%), or data ÷ Wh battery efficiency = Wh (it is easier to calculate the measured Wh) battery Wh ÷ battery voltage = battery Ah, Ah ÷ 1000 = mAh. If known internal battery capacity and voltage, power efficiency can be calculated move: (Ah data x output voltage) ÷ (battery capacity x battery voltage) = mobile power efficiency, or data ÷ Wh battery mobile power efficiency Wh = Measuring power adapter / charger efficiency: With meter (distribution box in your home that goods) and false load. Then only after the meter under test charger, USB charger output connector table and a dummy load, running for some time, check the accumulated Wh USB table data, then check how much electricity meter walk, 1 kWh = 1000Wh, with USB meter readings ÷ Changes = accurate meter readings charger efficiency. (In fact, the number of how many laps meter rotary table is more convenient, generally will be marked around the meter is 0.00x degrees) Battery capacity test: Use TP4056 and other linear charging circuit through this capacity table completely empty battery to charge to complete the full capacity reading on the battery capacity, the use of this method can also charge the phone about the measured capacity (possible general use USB cradle, because the phone is not linear charge, and standby power consumption interference) Tiny device measuring current and standby current: Low resolution 0.1mA precision current, easy to detect almost all the work of the current mini-USB device / standby current, such as card readers, wireless mouse receiver, Bluetooth or LAN adapters. Trickle charge time measurement muting function / capacity: After most of the phone is full there is little trickle, if not shielded trickle will always increase the capacity, interference testing. After setting the trickle charge current when the shield is less than the set value, capacity and accumulated charge time will not increase to more accurately measured charging time and filling capacity. Set to 0 to close trickle shielding. Measuring the electrical equipment detects the power output capacity of the current waveform: Speed ??current curve drawing (the fastest one second three times) can be used to draw on the power supply device detects the current waveform after power. Developing adaptive current electrical equipment essential tool! Data is cleared: Function 1 and Function 2 interface (that is, the first line shows the current; voltage; group that interface) Press and hold the button, the first will jump to the next group, continue to hold for a few seconds, it will jump back to the current group and zero the current group, to complete zeroing operation View: Parameter interface long press the button to switch to the next group Fast screen rotation: D + D- voltage display interface and display large font voltage and current interface, long press the button to display the direction of rotation Power Status: Powered via USB male, display about one second to enter the parameter interface LOGO Display parameter switching on / off the display: