Feature 1Application Scenario: This product is widely used in various battery production, maintenance, testing, scientific research laboratory and other occasions. 2Working Principle: The concept of this meter is to send an AC signal with a known frequency and amplitude to the battery. Measure the AC current generated and get the measurement result. This product test does not affect battery life. 3Test battery: The battery internal resistance tester is used to start the test of battery, which can test 12V 24V battery, help with your battery test. 4Multifunctional: It can check the health of the battery, battery power, internal resistance, charging and discharging ability, meet your many needs. 5Advantages: overload protection, bad contact indication, reverse polarity protection. The advantages of the meter are ease of use, accuracy and battery saving.Item Type:LargeScreenBatteryDetectorWeight: 529g/18.7ozMaterial: ABS and TPR and stainless steelType: Battery detectorCapacity Range: 3AH -250AHTest Method:Four terminal sensingCell Selection Criteria: STD AGM GEL EFB EN IEC CCA SAE DINSize: 13.7 x 8cm/5.4 x 3.1in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Battery Detector2 x Power Supply Cable1 x Instruction in English1 x Storage Bag