Battery hydrometer tester

- A 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 sulphuric acid, the more dense the electrolyte becomes. The higher the density, the higher the state of charge
- Easy reading test result thanks to the clear colour coded readout
- Tube material: Glass
- Clean with water after each use and dry it before next use