Battery hydrometer tester

Battery hydrometers are designed to detect the state of charge of a battery by measuring the electrolyte from each cell. The hydrometer contains an indicator that shows the density of the electrolyte: the denser the electrolyte, the higher the charge state of the battery.

• Thick-walled plastic housing resists breakage
• Instant scaling provides extra large markings
• Instantly and accurately test battery life whether the battery is hot or cold
• Works on all 6-12-24 volt systems