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