Product Characteristics 1 Compact design light weight convenient for users to carry and operate 2 Battery internal resistance tester features: single battery measurement group battery measurement oscilloscope 3 You can use the keys or touch screens Product Parameters Technical parameters Measuring range internal resistance 0.0m 100m Voltage 0.000V 16V Minimum measurement resolution internal resistance 0.01 m Voltage 1mV Accuracy of measurement internal resistance ±2.0%rdg±6dgt Voltage ±0.2%rdg±6dgt Display 240-320 24bit 3.5-inch TFT LCD + touch screen Dimensions 190 100 30mm3 Weight 0.5KG Memory capacity fLASH 16 M bytes Working power supply Rechargeable lithium battery can work for 5 ~ 6 hours at full charge Power converter AC100 ~ 240V/ DC 8.4v-1a power adapter/The charger Communication interface USB interface (insert U disk)