The hydrometer is calibrated at 80° F. Temperature affects the hydrometer
readings. The higher the electrolyte temperature, the higher the specific
gravity reading. The lower the temperature, the lower the specific gravity
reading. Add or subtract four points for each 10° variance from the 80° F
chart. Readings between cells should not vary more than 50 points.
If one cell in a particular battery bank being tested is at a 50% state of
charge while the others are indicating a full charge, charge only that
battery to see if the low cell will come up. At the same time, do not over
charge the “healthy” cells.
If the low cell does not come up after charging, this battery can damage
the rest of the battery bank and should be replaced. An accurate digital
volt meter (+/- .5%) will also give an indicator of the battery’s state of
charge.
Another test that can be performed is to place a specific load on the
battery for a predetermined length of time equal to that particular battery’s
rating. This machine is usually an adjustable carbon pile that can vary the
load being applied to the battery(s) while monitoring voltage to see if they
will perform to their specific rated capacities.
NOTE: See the chart for temperature compensation.
Liquid levels should be even between the cells of the battery
being tested as it will affect the accuracy of the test.
WARNING: Sulfuric acid in the batteries can cause
severe injury or death. Sulfuric acid can cause permanent
damage to eyes, burn skin and eat holes in clothing.
Always wear splash-proof safety goggles when working
around the battery. If the battery electrolyte is splashed in
the eyes, or on skin, immediately flush the affected area
for 15 minutes with large quantities of clean water. In case
of eye contact, seek immediate medical aid. Never add acid
to a battery once the battery has been placed in service.
Doing so may result in hazardous splattering of electrolyte.
ELECTRICAL SYSTEMS - HOUSE --- SECTION 8 • 301
NEPTUNE 2004
8
Temperature Correction Chart.
030815
tools.eps2
Summary of Contents for Neptune 2004
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Page 84: ...84 SECTION 2 DRIVING SAFETY NEPTUNE 2004 Weight Label...
Page 90: ...90 SECTION 2 DRIVING SAFETY NEPTUNE 2004 020254...
Page 92: ...92 SECTION 2 DRIVING SAFETY NEPTUNE 2004 020255B...
Page 93: ...DRIVING SAFETY SECTION 2 93 NEPTUNE 2004 2 020263 Weight Record Sheet...
Page 94: ...94 SECTION 2 DRIVING SAFETY NEPTUNE 2004 VIEWS Front Rear 010726c 010725...
Page 95: ...DRIVING SAFETY SECTION 2 95 NEPTUNE 2004 2 Roadside Curbside 010723d 010724e...
Page 106: ...106 SECTION 2 DRIVING SAFETY NEPTUNE 2004 NOTES...
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Page 151: ...EXTERIOR INTERIOR CARE SECTION 3 151 NEPTUNE 2004 3 NOTES...
Page 152: ...152 SECTION 3 EXTERIOR INTERIOR CARE NEPTUNE 2004 NOTES...
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Page 191: ...4 APPLIANCES SECTION 4 191 NEPTUNE 2004 NOTES...
Page 192: ...192 SECTION 4 APPLIANCES NEPTUNE 2004 NOTES...
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Page 231: ...EQUIPMENT SECTION 5 231 NEPTUNE 2004 5 NOTES...
Page 232: ...232 SECTION 5 EQUIPMENT NEPTUNE 2004 NOTES...
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Page 255: ...WATER SYSTEMS SECTION 6 255 NEPTUNE 2004 NOTES 6...
Page 256: ...256 SECTION 6 WATER SYSTEMS NEPTUNE 2004 NOTES...
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Page 276: ...276 SECTION 7 LP GAS SYSTEMS NEPTUNE 2004 NOTES...
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Page 313: ...ELECTRICAL SYSTEMS HOUSE SECTION 8 313 NEPTUNE 2004 NOTES 8...
Page 314: ...314 SECTION 8 ELECTRICAL SYSTEMS HOUSE NEPTUNE 2004 NOTES...
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Page 346: ...346 SECTION 9 ELECTRICAL SYSTEMS CHASSIS NEPTUNE 2004 NOTES...
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Page 411: ...CHASSIS INFORMATION SECTION 10 411 NEPTUNE 2004 10 METRIC U S CONVERSION CHART...
Page 413: ...CHASSIS INFORMATION SECTION 10 413 NEPTUNE 2004 10...
Page 414: ...414 SECTION 10 CHASSIS INFORMATION NEPTUNE 2004...
Page 415: ...CHASSIS INFORMATION SECTION 10 415 NEPTUNE 2004 10...