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250 / Piece(s)
by: Swastik Thermometer Co., New Delhi
The state of charge of a lead-acid battery can be estimated from the density of the sulfuric acid solution used as electrolyte. A Battery Hydrometers calibrated to read specific gravity relative to water at 60 degrees Fahrenheit is a standard tool for servicing automobile batteries. Tables are used to correct the reading to the standard temperature.
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Battery Hydrometeron the go!4.6