This battery tester is designed for testing the conditions of the 12v & 24v lead-acid starting battery, cranking system and charging system. It comes with a large 3.2-inch color LCD screen and it supports classic contact-tone to help you read and operate more efficiently. It utilizes 4-wire Kelvin method to complete the collection of a series of complicated data for calculating every testing data with a build-in precise circuit and improved digital processor. Moreover, some circuit improvements including polar reversal protection, over-voltage input protection, and loose lead detection. ensure safety and convenience during testing This is a must-have tool in the fields of battery sales, vehicle repair and battery inspection equipment system Supported 15 Languages: Chinese, English, Deutsch, Italiano, Le Francais, Espanol, Portugues, Magyar, Polski, Slovenskeho,Cesky, Pyccknn, Nederlands, Svenska, Japanese. Three Major Test Items: 1. Battery Capacity Test 2. Cranking Test 3. Charge System Test 4. Data Review Functional Demonstration: 1. Battery Capacity Test 2. Cranking Test 3. Charge System Test 4. Data Review 5. Time Adjust 6. 15 Language Set Battery Standards: CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, GB. Tests All 12V 24V Automotive Batteries: Car, Caravans, Boat, Light Truck, Motorcycle colour:Black Material:ABS Package Contents: 1 x DY222 Car Battery Tester 2 x Full copper core kelvin clip 1 x User Manual 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 +/-