Monaco LaPalma, Руководство пользователя

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2004 • LaPalma
6. Corrosion:
Corrosion from spilled or splashed electrolyte form deposits that can
conduct electricity and cause battery drain. Clean off all corrosion, especially
around the battery terminals and on the top cover of the battery. Prevent
accumulation by coating the terminals and the exposed metal cable
connectors with high temperature grease.
7. Overcharging:
Overcharging rapidly converts water to gas and decreases the electrolyte’s
water content as the water evaporates. The electrolyte level drops and
becomes more acid in content. This subjects the plates to a higher
concentration of sulfuric acid and results in early battery failure.
NOTE: Any time you add more than one or two ounces per-cell
per-thousand miles driven, check the motorhome charging system
for overcharging. Prolonged overcharging generates excessive heat
inside the battery which buckles the plates and destroys the
battery. It is a fact that over 50% of battery failures are caused by
overcharging.
Why does the voltage on a discharged battery measure the same as a fully
charged battery until the loads are applied? The simple answer to this might
go as follows: A battery creates electrical power by converting energy from a
chemical reaction into electrical energy. As this reaction slows down the
battery voltage will drop. In a lead acid battery the electrolyte conductivity
(how well electrical current can flow through it) changes. The same current
may be available but the rate of the reaction decreases, causing a voltage
drop.
Another way of looking at this is to use the analogy of a water pump
(a battery is an electric pump). The pressure in psi (pounds per square inch)
that a pump delivers is like a battery’s voltage. The volume of water in GPM
(gallons per minute) is like the electrical current. Let’s look at a 12 psi pump
with no loads (the pump is running but the outflow valve is turned off). The
pump will run and the internal pressure of the pump will build up to some
point higher than 12 psi. Once the valve is opened and the water is free to
flow into the loads the pressure will drop to the rated output pressure of 12
psi, but only if the load is not too big. If the pump is designed to maintain 12
psi at 15 GPM, and a load demanding 20 GPM is connected, the pump will
not be able to keep up and the pressure will get sucked down to a lower psi.
If the load is then reduced or removed the pump will catch up and return
to its rated 12 psi pressure. If the pump has an infinite source of water, such
as a lake or the water utility (this is like the grid, no battery), the pump will
never run out of pressure. If the pump never runs out of pressure and is
Electrical Systems
Battery Voltage &
Current