Marine / Boat Battery Rapid Hydrometer Tester

Might Max Battery Hydrometers are designed to detect a battery's state of charge by sampling the electrolyte from each cell. The hydrometer contains a floating indicator that represents the density of the electrolyte - the more dense the electrolyte the higher the battery's state of charge.

Mighty Max Battery Hydrometer

- Thick wall plastic body resists breakage

- Direct dial scale features oversize markings

- Immediately and accurately tests battery life whether the battery is hot or cold

- Works on all 6-12-24 volt systems

- Includes a Step-by-step instructions on body