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
tjcooper –
Question on accuracy. Unit delivered fast. Cheap rubber hose….will need to be replaced with stiffer hose so that fluid flows in faster. Current hose bends almost right angle as it goes into cell so the flow of fluid is very poor. Just bought brand new Costco Interstate battery and used professional charger to charge after an alternator failure. Charged for 18 hours. The tester showed only 1.20 which was medium of Fair I expected a high Good value. I will take battery to repair shop with a pro hygrometer and see if it sees a difference. Tjcooper