ITEM NAME:18650 battery Li-ion tester Capacity Current Voltage Detector LCD meter OZ.This item can test phone, power bank ,18650 18350 26650 lithium battery. Resolution: when the resistance is less than 10 Ω, a resolution of 0.01 Ω, when resistance is greater than or equal to 10 Ω and less than 100 Ω, a resolution of 0.1 Ω, when the resistance is greater than or equal to 100 Ω and less than 1000 Ω Ω a resolution of 1.