46335 FJC Inc. Battery Hydrometer (Each)

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Price $12.63

Product Code: FJC46335

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Description

Prop65

46335 Battery Hydrometer Indicator Dial Shows Battery Charge & Specific Gravity. Auto Shutoff Valve Prevents Overflowing. Acid Resistant.

Product Features

Indicator Dial Shows Battery Charge and Specific Gravity
Auto Shutoff Valve Prevents Overflowing
Acid Resistant

Temperature Correction
Specific Gravity of acid is temperature dependent. If the temperature is very cold or very hot this can lead to incorrect readings. To correct for temperature use the following equations the equations or below 70ºF subtract points (0.03 per 10ºF) and above 70ºF add points.

Correction factor = (0.331 x Cell Temp ºF - 23) / 1000 or 0.003 pts per 10 ºF
Correction factor = (0.595 x Cell Temp ºC – 12.5) / 1000

This is valid for 0-130ºF or -17.8- 54.4ºC

The following shows the approximate state of charge at various specific gravities at 77ºF / 25ºC.

Charged	Specific Gravity
100%	1.265-1.275
75%	1.225-1.235
50%	1.190-1.200
25%	1.155-1.165
0%	1.120-1.130

Hydrometers are at best accurate to +/-0.005 points. Voltage can be used to estimate state of charge, however caution must be taken when interpreting voltage readings.

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