The battery tester is designed to measure the quality of battery acid.

• Fill the tester with liquid up to the FLUID LEVEL line.
• If air bubbles appear in the liquid, remove them by tapping the tester lightly.
• The upper, smaller indicator should be in a vertical position.
• The large lower indicator shows the condition of the electrolyte:
• Blue – good fluid
• Gray – medium
• Red – bad, the battery is not sufficiently charged.
• Check each cell and charge it if the indicator is in the red zone, i.e. below the fluid density value of 1.210.
• It is recommended to replace the battery when, after its previous charging, the difference in readings between the cells exceeds 30 units.

After each use, wash the tester with warm water and soap and rinse it.