Battery acid tester with thermometer

Battery acid tester or hydrometer is used to test the state of charge of a battery cell. This is performed by measuring the density of the electrolyte, which is accomplished by measuring the specific gravity of the electrolyte. The greater the concentration of sulfuric acid, the more dense the electrolyte becomes. A fully charged traction battery normally has an acid density of 1,27 to 1,29. Measuring range of 1,08 - 1,30 g/ml, the thermometer of 0-60°C. . Glass cilinder 250 mm with plastic suction hose 200 mm.