Description: Test and analyze battery load system, indicating battery condition include Battery Life Percentage, CCA , Battery Voltage,Battery Resistance in case of any unexpected shutdown. Continuous test with battery power, no damage to battery, and the reverse polarity and over voltage protection make it to be ultra safe. Complete wide CCA test range (100-1700), offer reliable and accurate operation for more sized batteries. Great Compatible with most 12 volt battery type(include Flood battery, AGM battery, Gel battery, Deep Cycle Battery), work fast and precisely. Come with large LED screen and heavy duty clamp, and beep remind function make it to be more durable and reliable. Specification: AE300 Battery Tester Test Objecrt:12V Battery Input voltage: DC 12V Color:Black+Yellow Test Item: Voltage, resistance, CCA, battery condition. Wide Operating Range : CCA:100-1700 DIN:100-1000 IEC:100-1000 En:100-1700 Battery Life Percentage : 80% - 100% Good Condition 60% - 80% OK, Not Bad 40% - 60% Need Attention 0% - 40% Bad,Need To Exchange Requied Size Chart: Size: 150x80x40mm / 5.90x3.14x1.57inch Package Includes: 1 Piece Battery Tester 1 Piece Crocodile Clip Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!