LCD Display Battery Capacity Tester MAh MWh Lithium Battery Digital Battery Power Detector Module 18650 Battery Tester Type-C The product supports independent 4-channel internal resistance and capacity measurement; Supports charging, with a maximum of 9 charging and discharging cycles in automatic mode; 18650 battery holder uses a compact battery holder, suitable for flat head battery measurement!!! Language switching Press and hold the "Menu/M" key to power on, release the key after the screen is lit, and power off after 10 seconds Power on and start again to complete the switch. Basic parameters: Power supply: DC5V (all self-contained) Batteries for use: Batteries that meet the stop discharge voltage of 2.5~3.5V and 4.2V charging are suitable Power Supply Interface: Dual Type-C System language: Chinese, English Test Quantity: 4-way charge and release measurement Internal resistance measurement: support, use DC two-line method to test internal resistance Charging function: Support, full of automatic cut-off charging, not suitable for lithium iron phosphate battery charging. Discharge function: support, stop automatically when condition is reached Automatic charging: Yes, Li-Ferrite Phosphate batteries are not suitable for charging when the battery is fully charged at the end of the automatic mode. Loop filling: support, 1-9 cycles adjustable Status Tip: Support Stop discharge voltage: 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.1V, 3.2V, 11 adjustable 3.3V, 3.4V, 3.5V Discharge current: max. 1A current, not adjustable, does not support self-improvement Cooling mode: Active cooling High temperature protection: support Charging Voltage: Dedicated battery charging chip control, max. 1A charging, full voltage 4.2V Power off save: save settings parameters only, do not save measurement data Product size: 150 103 36mm 1. Type-C5V power supply interface 2, Type-C5V power supply interface 3, Channel 1 18650 battery holder 4, Channel 2 18650 battery holder 5,Channel 3 18650 battery holder 6,Channel 4 18650 battery holder 7,1 Channel 1 Terminals 8,2 Channel 2 Terminals 9,1 Channel 3 Terminals 10,2 Channel 4 Terminals 11. Cooling fan 12, Display 13Menu/M key 14Adjust/S key 15Start stop/R/S key 16Passageway/CHN key 17. CHN1 channel status indicator 18, CHN2 channel status indicator 19. CHN3 Channel Status Indicator 20, CHN1 Channel Status Indicator Interface introduction 1. Real-time voltage 2, Real-time current 3, Cumulative capacity 4, Cumulative energy 5. Battery internal resistance 6, cumulative running time-hhh:mm:ss (hours:minutes:seconds) 7. Number of cycles 8, low voltage stop discharge 9, working mode menu 10. Status Indication 11, Channel Indication Comparison of internal resistance test accuracy The product uses the DC 2-wire method to test the internal resistance of the battery. When the battery is fully charged, the numerical accuracy is high. The test results are used for reference and comparison between the batteries tested in the same batch. For those with high internal resistance accuracy requirements, please use a professional internal resistance instrument using the 4-wire AC method to test. Test principle The DC impedance is that according to the physical formula R=V/I, the test equipment forces the battery to pass a large constant DC current (usually a large current of 10A-80A is used at present) in a short time (usually 2-3 seconds), measures the voltage at both ends of the battery at this time, and calculates the current internal resistance of the battery according to the formula. Capacity test accuracy reference The test results of five LGABB4 18650 batteries (with a nominal capacity of 2600mAh) in AUTO mode are as follows How to use 1 Measuring internal resistance The product uses the DC 2-wire method to test the internal resistance of the battery. When the battery is fully charged, the numerical accuracy is high. The test results are used for reference and comparison between the batteries tested in the same batch. For those with high internal resistance accuracy requirements, please use a professional internal resistance instrument using the 4-wire method to test. Test method Wait a few seconds after installing the battery, read the battery data, and the battery voltage and internal resistance parameters will be displayed. There will be a delay in data loading during battery loading and unloading, and the data will be checked after it is stable. The circuit is disconnected when no battery is installed, and the resistance value is infinite The circuit is formed after installing the battery, with an internal resistance of 31mOhm Reminder *High accuracy of internal resistance measurement when the battery is fully charged *When the voltage is insufficient, the internal resistance display may h