TESTER INTERNAL RESISTANCE OF THE BATTERY!!! LITHIUM LEAD-ACID LITHIUM-CADMIUM-NICKEL BATTERY WITH LCD SCREEN AND ENERGY SAVING FUNCTION. Features: -Voltage resistance with screen at the same measurement time, measurement fast and stable. -Automatic range switching stable and fast, measurement displays update 4 times per second, base can be locked in stable display in the time range about 1S. HOLD function to lock the display, more convenient reading. -Use of LCD screen with dot matrix, font combination, clear display of measurement results, but also display of rich content. -With three levels of battery power detection. By adjusting the withstand voltage, the batteries can be grouped. Built-in charging management circuit. You can set two charging currents to 200 mA and 400 mA. -With energy saving function. No operation and input, very delayed automatic shutdown. You can set the delay of transition to sleep mode by 5 to 30 minut. -The range can be 200 ohms, it can measure button batteries, 9V laminated batteries and other batteries with low current, high internal resistance and low capacity batteries. Technical data: Color: black Size: 120x60mm Material: CPE electronic components Battery capacity: 2500 mah Maximum voltage between any terminals: 100V Indisplay: internal resistance – 2000 counts, voltage – 99 999 counts, update 4 times per second Temperature: workx10 -40 , storagex -20 -60 Internal resistance temperature coefficient: 0,1x (specified accuracy) or C (andlt 18C or andgt 28C) Battery type: 3,7 V 1300 mAh 18650 Energy consumption: andlt 60mA (range 200mΩ and more, when the power supply is 3,7V, the backlight is off) andlt 120mA (range 20mΩ when power supply is 3,7V, backlight off) andlt 10mA (enter low power mode) 0mA (off) Package includes: 1x Host 1x para of 4-pin measuring wires 4x needles