1Adopting the conductivity method test principle, no need for high current discharge, and the battery has no heat and no damage. 2Three functions include battery test, startup system test, power generation charging system test, simple operation, easy to carry and store. 3The characteristics of the TPE rubber sheathed wire include extremely thin copper wire, silicone insulation, particularly soft, prevent breakage, and a length of approx. 1000mm/39.4in. 4Suitable for 12/24V automotive batteries, common liquid rich type (WET), maintenance free (MF), AGM, EFB start and stop, GEL, Marine, etc. 5Suitable for automotive start system and charging system test and CCA, DIN, IEC, EN, JIS Standard batteries and unknown standard batteries. 6The input voltage is DC 9 30V. The housing material is made of German PC and ABS plastic materials.