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ELECTRICAL
Sy
STEMS
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2013 HOLIDAY RAMBLER
Placing a load on the Battery:
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 batteries while
monitoring voltage to see if they will perform
to their specific rated capacities.
Battery Amp Hours
Deep cycle batteries are rated in amp hours
(Ahrs) with the discharge occurring over an
extended period of time before the battery is
charged. The working range of a deep cycle
battery is between 50 and 100% state of charge
(SOC). Deep cycle batteries should not be
cycled below 50% state of charge. Discharging
a deep cycle battery below 50% state of charge
shortens the life of the battery.
Deep cycle batteries use an amp hour rating
that is usually calculated over a 20 hour
discharge interval. For example: A deep cycle
battery with a rated capacity of 100 Ahrs. is
designed to release current at the rate of 5
amps per hour. Multiply a 5 amp load over a
20 hour discharge period equals the rated 100
Ahr. capacity.
These discharge figures are calculated
with the battery starting at 100% state of
charge with the battery at 80º F. when the
discharge cycle begins. However, increasing
the discharge load applied to the battery from
5 amps to 10 amps on a 100 Ahr battery does
not yield ten hours of discharge time. This is
due to the internal reactions that occur when a
battery is discharging.
Actual discharge time for a 10 amp load
may be closer to eight hours of discharge time.
Increasing the load applied to the battery to 20
amps will not yield five hours discharge time
but may be less than three hours.
How long will the batteries last?
Conduct this eight-hour test to determine
how long your particular battery will operate
before dropping below 50% state of charge.
1. Before beginning the test, be sure the
battery is at 100% charge by verifying with a
hydrometer or an accurate voltmeter.
2. Turn on three lights. Switch refrigerator
operation to propane.
3. After the eight-hour period, turn off the
lights and refrigerator. Allow the battery
electrolyte to stabilize for at least one to three
hours.
4. Test the battery again with a hydrometer
or voltmeter.
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Содержание HOLIDAY RAMBLER 2013
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Страница 11: ... General Information 1 2013 HOLIDAY RAMBLER Notes ...
Страница 47: ...44 Driving Safety 2 2013 HOLIDAY RAMBLER Notes ...
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Страница 127: ...124 Propane Systems 7 2013 HOLIDAY RAMBLER Notes ...
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