True 4-wire AC sinusoidal measurements effectively avoid the effects of test leads and contact resistance. Two function interfaces, battery sorting function. Built-in battery, Android phone charger charging, low power consumption + multiple power saving options. The test range is up to 200 ohms with a minimum resolution of 0.01 milliohms and less than 5 milliohms. Press HOLD to enable the ZR function to measure internal resistance as low as 0.30-0.50 milliohms. Handmade, the appearance of the right side is overly cautious. 2017 high-voltage battery internal resistance tester. True four-wire 1Khz AC sinusoidal battery internal resistance meter 0.00001 ohms --- 200 range. It can measure lead acid, lithium ion, lithium polymer, lithium iron phosphate, alkaline, dry battery, nickel hydrogen, nickel cadmium, button battery, etc. The senduseZR function measures below 5 ohms, and the internal resistance is more precise. Please notice: The calibration and recovery calibration of this product is a factory mode, which requires professional equipment and instruments to operate in accordance with the correct calibration method. In order to avoid misuse by users, some buttons are not open to the public and do not affect the use of the product. Material:plastic colour:Black Package Contents: 1 x tester 1 pair x probes Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. About Us We provide the good product with the best price,we support Wholesale/Drop Shipping Order 1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it. 2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.