Features: Wider Ranges: This tester has a measuring ranges of 0.01m~200. Compared with traditional battery internal resistance testers, it has a wider measuring ranges and a wider ranges of applications.Low Resistance Measurement Function: Short press the button to turn on the low resistance function, and measure the internal resistance of 0.30-0.50 milliohms.Various Battery Tests: This tester can measure lithium ion, lithium polymer, lithium iron phosphate, alkaline, dry battery, nickel metal hydride, nickel cadmium, button battery, etc.Portable Size: This battery internal resistance tester with portable size and easy to carry, you can share this product with your friends and families. Built-in Battery: This tester has a built-in capacity lithium battery to supplys , you can recharge it in time when the battery voltage is under 3.5V.Screen Backlight&Automatic Shutdown: The backlight of screen is adjustable and you can setting the automatic shutdown time according to your needs. Voltage&Internal Resistance Display: The voltage and internal resistance are displayed on the screen, and the ranges can be manually and automatically switched.Specifications:Measuring ranges: 0.01m~200Resolution: 0.01mBattery: 1 * lithium battery, 400mAh (included)20m:Minimum resolution: 0.01mAccuracy: 0.7%+7200m:Minimum resolution: 0.1mAccuracy: 0.5%+52:Minimum resolution: 1mAccuracy: 0.5%+520:Minimum resolution: 10mAccuracy: 0.5%+5200:Minimum resolution: 0.1Accuracy: 0.6%+5Voltage measuring:Ranges: 6VMinimum resolution: 0.001VAccuracy: 0.1%+5Ranges: 45VMinimum resolution: 0.01VAccuracy: 0.1%+5Style: CMaterial: Plasticcolour: As shownPackage Contents:1 set x Battery Internal Resistance TesterOnly the above package content, other products are not included.Note: Light reflection 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.