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While the output regulation of the charger will minimize battery gassing and water loss,
monthly checks of the electrolyte level (for wet lead acid batteries) are still strongly
recommended. Some water loss is an inevitable aspect of the charging process, and
maintaining the correct electrolyte level in your batteries is the most important thing
you can do to assure their maximum performance and long life.
C) Proper Load Sizing
The Phase Three Charger is rated for continuous duty (e.g., model PT-14 is rated at 14
amps continuous, PT-25 at 25 amps continuous, etc.). While the charger cannot be dam-
aged by overloads that exceed this continuous rating, excessive load demands may draw
battery voltage down faster than the charger can resupply it. If battery voltage continues
to drop and the output current is at maximum while the charger is in service, check to
see that your average d.c. loads are not exceeding the charger's rated output. If they
are, you may wish to consider adding another charger in parallel to provide sufficient
power for your requirements. (See section III-E, Multiple Unit Parallel Wiring.)
D) Operation With Engine
It is perfectly acceptable to allow the charger to remain on when the engine is started
and while it is running. The current limit feature of the Phase Three Charger will pro-
tect against any damage due to the high current demands of engine cranking. Output
diodes will prevent any back-feed of current into the charger from the alternator while
the engine runs.
As the alternator starts to charge the battery, the charger output will decrease. When
the battery voltage exceeds the rated output voltage of the charger it will shut off and
stay off as long as the batteries are in this high state of charge. If the battery voltage
should drop below the charger's rated output voltage it will automatically return to ser-
vice.
E) Operation as a d.c. Power Supply (stand-alone d.c. power source)
Most battery chargers are not suitable for powering electonic devices directly, without a
battery attached to the output, as the high ripple and pulsing d.c output ( i.e., rectified
a.c. output) can interfere with the operation of the device. However, this charger em-
ploys a circuit that produces an extremely well-filtered d.c. output. Therefore it is able to
power virtually any d.c. powered device (within the unit's rating) without the battery
attached in-line (if, for instance, the battery must be removed for any purpose and a.c. is
still available). All but the most sensitive d.c. powered electronic devices will function as
normally as if powered by a battery. In addition, the current limiting circuitry enables
the charger to handle the high start-up surges associated with inductive loads.
P.O. Box 1306
Newport Beach,
California 92663
www.newmarpower.com
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: sales@newmarpower.com
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