1. test for car 28-200 Ah batteries 2.Test Current: 0-1000A 3.Power Supply: AC380V,50HZ,30KW 4. ... Automatic Interior Resistance Testing Machine 1. Application: welding quality testing for car 28-200 Ah batteries2.Operation: Move the battery to ... , the detector will lower automatically, then adding the set current, test the welding point resistance, then welding quality can be tested ...