|
|
 |
|
HOW DO I PERFORM PREVENTIVE MAINTENANCE?
|
|
While working with lead-acid batteries (and corrosion), please wear glasses to protect your
eyes in the unlike even of an explosion.
The plates need to be covered at all times to prevent an internal battery explosion or sulfation.
For non-sealed wet batteries (with filler caps), if the electrolyte levels are above the plates but low, allow the battery
to cool to room temperature, and add only distilled, deionized or demineralized water to the level indicated by the battery
manufacturer or to within 1/4 to 3/8 inch (6 to 10 mm) below the bottom of the filler tubes (vent wells or splash barrels).
Avoid overfilling, especially in hot weather, because the heat will cause the electrolyte
to expand and overflow. If the electrolyte levels are below the tops of the plates, add enough water to cover the plates,
recharge the battery, and top off the levels when the battery is at room temperature. In an emergency, use rain water rather
than reverse osmosis or tap water because rain water does not contain calcium or magnesium. Using tap water to refill batteries
can produce calcium sulfate crystals that can fill the pores and coat the plates. State-of-Charge (SoC) readings will be inaccurate
immediately after the addition of water, recharges or discharges.
Tighten loose hold-down clamps, battery terminals and connectors.
If required, remove any corrosion, lead oxidation, paint or rust with a brass wire battery brush (by
brushing the corrosion away from you) or "ScotchBrite" pad from the mating surfaces of both ends of each battery cable terminals,
battery posts or terminals, and engine grounding strap connections. (A stiff steel wire brush may damage protective lead plating
on copper connectors or terminals.) Heavy corrosion can be neutralized with a mixture of one pound of baking soda (bicarbonate
of soda) to one gallon of warm water. A good bare metal to metal mating surface is required for good conductivity. To prevent
corrosion on terminals, thinly coat the terminals, terminal clamps and exposed metal around the Car battery with high temperature
grease or silicone. Do not use the felt or metal washers between the mating conductive surfaces with General Motors-type side
terminals. For Deep Cycle batteries, use "No Oxide A" (or the battery manufacturer's recommended grease) on the terminals
and connectors. Do not use the felt or metal washers between the mating conductive surfaces with side, stud or "L" terminal
batteries. Use of some stainless steel alloys and other metal washers, nuts and bolts have also been known to cause problems
with electrolysis and high resistance. Corrosion is caused by one or more the following:
Dirty or wet battery tops normally caused from expansion of electrolyte from overfilled cells.
Acid fumes leaking through the vent caps, which could be a sign of overcharging.
Electrolysis due to the mismatch
of metal alloys used in the battery posts and terminals.
Clean the battery top to eliminate conductive paths created
by dried or wet electrolyte and to prevent corrosion.
Clean the alternator or charging system to allow better heat transfer and check the alternator belts for cracks
and correct tension.
Replace any battery cables that are corroding, swelling or damaged with equal or larger diameter cable. Larger cable is better because there is less voltage drop.
Headlight Test In the dark, pull your car up to a building wall or a garage
door. Turn off the engine and leave on the headlights. If they're bright, then your battery is probably fine. If the lights
are dim, but get brighter when the engine is started, this tells you the battery could be bad and requires further testing.
If the lights are dim and stay dim when the engine is started, this tells you that your charging system requires further testing.
Open Circuit Voltage (OCV) Test An OCV test may be performed
with a voltmeter.
- To determine if the battery is experiencing a problem, turn off all electrical loads and the charging source.
- For an accurate reading, allow the battery to sit with no electrical loads applied for at least one hour.
- Connect a voltmeter to the positive and negative terminals and measure the terminal post voltage with no loads or chargers
connected to the battery.
- To determine the battery's state of charge, compare the OCV reading on the voltmeter to the Open Circuit Voltage Chart.
| Open Circuit Voltage VS. State of Charge |
| 12.66V |
100% |
| 12.45V |
75% |
| 12.24V |
50% |
| 12.06V |
25% |
| 11.89V |
0% |
We do not recommend that you substitute the OCV test for a specific gravity test, which is more accurate. The OCV test,
however, is the only way to determine the state of charge of a sealed no-maintenance battery.
Specific Gravity Test This test is performed with a hydrometer,
which is the most accurate hand held tool for determining the state of charge of a lead acid battery.
- Draw electrolyte into the hydrometer a few times so that the float reaches the same temperature as the electrolyte. This
will increase the accuracy of your readings.
- Hold the hydrometer vertically so that the float is free and does not touch the inner walls of the barrel.
- Hold the hydrometer so that the liquid is level in the barrel and at eye level.
- When you draw the electrolyte, make sure that the hydrometer is full.
- Check each individual battery cell. If the specific gravity varies more than .050 or "50 points" among the cells while
the battery is at a 75% state of charge or above, then the battery is bad and should be replaced. The cells that have a specific
gravity of 50 points less than the highest cell are bad cells. A hydrometer reading of 1.265 or greater at 80°F indicates
a full charge for Interstate batteries. To determine the battery's state of charge, compare the hydrometer reading to the
Specific Gravity Chart.
| Specific Gravity VS. State of Charge |
| 1.265 |
100% |
| 1.225 |
75% |
| 1.190 |
50% |
| 1.155 |
25% |
| 1.120 |
0% |
- To get the most accurate hydrometer reading, you should adjust your hydrometer reading according to the temperature. If
the electrolyte temperature is ABOVE 80°F , ADD .004 (called "four points") to the hydrometer reading for each 10 degrees
above 80°F. If the electrolyte temperature is BELOW 80°F, SUBTRACT four points from the hydrometer reading for each 10 degrees
below 80°F.
Load TestThis test is a 15-second discharge of the battery at a 1/2 cold cranking
amp level. A more accurate testing method than a voltmeter or a hydrometer, the load test is often required to determine whether
a battery is good or bad. It is used by professional technicians.
CAR AND DEEP CYCLE BATTERY FREQUENTLY ASKED QUESTIONS ! Click Here
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006- 2008 New Webs by RWG
|
|
|
Oct , 2008
|
Caylee Addison Gallimore, Born
Oct. 17, 2008- Photos
|
|
|
May, 2008
|
Derek and Janet Gallimore , Married May 1st Las vegas: Photos
|
|
|
Jan,08
|
Ervin Watkins Memorial
June 28,1947-Jan.13,2008
|
|
|
Jan, 08
|
|
|
|
Jan, 08
|
Yard Sale Stuff
Canaan Ch. Rd.
Denton NC
|
|
|
July 07 updated
|
Class of 1967 - Denton NC
DHS
|
or
|
|
June 07
|
Backstage Salon Productions * Lisa Land * Denton NC
|
|
|
November
|
|
|
|
October
|
Picasa Web Albums~ Shelby Misc. Photos
|
|
|
October
|
Ward / Skeen Reunion Oct. 2006 ,Video clip
|
|
|
July
|
Gallimore Photo/History Web was created 2000,Updated and New Look in 2006
|
|
| |
|
|
|
May
|
Summerville Baptist Church, Denton NC
located near High Rock Lake NC and Denton NC 3134 Summerville
Church Rd
|
|
|
|
48 ft. Flat Bed Tarped or untarped loads , 80,000 lbs gross
|
|
| |
|
|
|
|
AttractiveGetAways, Denton,NC~Robin Webster,Denton NC
for Crusies.Vacations and Disney World and cruise packages. phone 336-859-0774
|
|
|
|
2000 - 2005 URL
Click on these links
|
Chad Gallimore Construction ~Serving Denton, NC & Surrounding Communities Specializing
in Grading , Hauling ,Landscaping , Tile Ditches, Footers,
Perk Holes and installing Septic Tanks, Dredging Ponds, Gravel,Shell Rock,Dirt ,Sand
|
|
Shelby Rae @ Disney 2006 March 28-31 ( 162 images )
|
|
Shelby Rae Gallimore * Sept 4,2000 to Present Day, family photos,Denton,NC
|
|
Shelby Rae Gallimore ~ Homepage / Links
|
|
| |
|
|
Ronnie Gallimore links and Shelby and Caylee Gallimore links
|
|
Cardinal Chemicals Photo Links, All Albums
Click Here
| Click on DHS logo |
|
| TourdeKale.com |
|
| a non-profit fundraiser benefit Bicycle, Run and Walk event in June |
Canaan UMC Photo Link Site * Denton, NC
- Click Here
| Click on Banner |
|
| Click on logo |
|
If you like Southern Gospel you will be pleasantly surprised at the sound of All Quartets Radio
Click on Banner for info
|
|
|
|
