May 29, 2011 6:15 PM | Tagged as Battery Maintenance
Battery Monthly Maintenance and Storage
Perform Monthly Maintenance
A battery only requires a little monthly maintenance to perform perfectly. Keep the battery charged to 100%, recharging when the lights dim, the starter sounds weak, or the battery hasn't been used in more than two weeks. Other than that, follow this simple check list every month:
Finish up by testing the battery with either a hydrometer or voltmeter. If you make monthly maintenance on your battery part of your routine, your battery is guaranteed to live a long life.
If the vehicle is in storage or used infrequently, disconnect the battery cable to eliminate drain from electrical equipment. Charge the battery every two weeks.
For extended storage, remove the battery from the vehicle and charge to 100%. Charge the battery every month if stored at temperatures below 60° F. If stored in a warm area (above 60° F), charge every two weeks. Make sure batteries are stored out of reach of children.
Working With Acid
ANTIDOTES: For acid on the skin, flush with water. If acid is swallowed drink large quantities of milk or water, followed by milk of magnesia, vegetable oil or beaten eggs. Do not induce vomiting. Call a poison control center or doctor immediately. For acid in the eyes, flush for several minutes with water and seek immediate medical attention.
SULFATION AND FREEZING
Let's back up just a minute: we said earlier that discharge turns the lead plates into lead sulfate. This lead sulfate is actually a crystal. If the discharge continues uninterrupted, the sulfate crystals grow and blossom into sulfation - and a problem.
Much the same happens if the fluid level is too low, which exposes the plates to air. Then the active lead material oxidizes and sulfates, and it doesn't take long before it won't hold a charge. (Low electrolyte levels cause another problem, too: acid in the electrolyte becomes more concentrated, causing material to corrode and fall to the bottom. In sufficient quantity, it will short out the battery.)
Keeping a battery charged, pulling the battery cable during storage, and keeping electrolyte levels up eliminate the problem. For added protection, YUASA"s YuMicron, YuMicron CX and GRT batteries are treated with a special chemical formula called "Sulfate Stop." This dramatically reduces sulfate crystal buildup on plates. The result: longer battery life.
How good is Sulfate Stop?
We simulated a constant discharge condition on two batteries with a 10-watt bulb. Even after being totally drained for a week, the battery with Sulfate Stop made a 90% recovery.
The untreated battery: useless.
It shouldn't bother you - unless a battery is inadequately charged. Looking one more time at the discharge process, remember that electrolyte acid becomes water as discharge occurs. Now, it takes Arctic temperatures to freeze acid. But water...as we all know, freezing starts at 32° F. A sign of this is mossing - little red lines on the plates - but it's tough to see unless you've got great eyes. Freezing can also crack the case and buckle the plates, which means the battery is shot.
A fully-charged battery can be stored at sub-freezing temperatures with no damage. As the chart shows, it takes - 75° F to freeze electrolyte in a charged battery. But as just a couple degrees below freezing, at +27° F, a discharged battery's electrolyte turns to ice. That's a difference of more than 100° F between the low temperatures a charged and discharged battery can stand.
At temperatures such as these, incidentally, the self-discharge rate of a battery is so low that a recharge usually isn't needed for months. But to stay on the safe side, test.
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