Features:_x000D_ True 4-wire AC sinusoidal measurements effectively refrain the effects of test leads and contact resistance._x000D_ Two function interfaces, battery sorting function._x000D_ Built-in battery, phone recharger charging, low power consumption + multiple power saving options._x000D_ The test range is up to 200 ohms with a minimum resolution of 0.01 milliohms and less than 5 milliohms._x000D_ Press HOLD to enable the ZR function to measure internal resistance as low as 0.30-0.50 milliohms._x000D_ Handmade, the appearance of the right side is overly cautious._x000D_ True four-wire 1KHz AC sinusoidal battery internal resistance meter 0.00001 ohms-200 range._x000D_ It can measure plumbic acid, lithium ion, lithium polymer, lithium iron phosphate, alkaline, nickel hydrogen, nickel cadmium, button battery, etc._x000D_ The ZR function measures below 5 ohms, and the internal resistance is more accurate._x000D_ Specifications:_x000D_ Material: ABS_x000D_ Color: black_x000D_ Battery: 1 * lithium battery, 2000mAh (included)_x000D_ Accuracy format: ([accuracy percentage]+[least significant digit])_x000D_ Range: 20m/200m/2/20/200_x000D_ Maximum resolution: 0.01m/0.1m/1m/10m/0.1_x000D_ Accuracy: 0.7%+7/0.5%+5/0.5%+5/0.5%+5/0.6%+5_x000D_ Display mode: 22.00m (when ZR function is enabled)/220.0m/2.200/22.00/220.0_x000D_ In the range of 5%-95% of the gear, when it is not within this range (less than 5% of the range of the gear range, or greater than 95% of the range of the gear range), the error may be greater than the above accuracy._x000D_ Voltage measurement: (% reading +% range)_x000D_ Range: 1V/10V/100V_x000D_ Maximum resolution: 0.00001V/0.0001V/0.001V_x000D_ Accuracy: 0.15+0.015/0.15+0.010/0.15+0.015_x000D_ Display mode: .99999V/9.9999V/99.999V_x000D_ Positive and negative symmetry error (0.012%+5 words)_x000D_ Temperature drift within normal use temperature (10-40) 100ppm/_x000D_ Maximum voltage between any terminals: 100V_x000D_ Display: internal resistance figures: 2000 counts Voltage figures: 99999 counts update 4 times per second_x000D_ Temperature: working: 10-40, storage: -20-60 internal resistance temperature coefficient: 0.1 * (prescribed accuracy)/ (28)_x000D_ Power consumption:_x000D_