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WARNING
IF THE BATTERY REMAINS INSTALLED IN THE VEHICLE:
1.
DO NOT CONNECT THE CHARGER AC POWER PLUG TO THE
ELECTRICAL OUTLET UNTIL ALL OTHER CONNECTIONS ARE MADE!
Place both the AC and DC power cords in the best position to avoid
2.
accidental damage by movable vehicle parts, i.e. hoods, doors, or moving
engine parts (fan blades, belts, or pulleys).
3.
Check the polarity of the battery posts. If the positive (pos, p, +) post is
connected to the vehicle chassis, then the vehicle has a positive ground
system. If the negative (neg, n, -) post is connected to the vehicle chassis,
then the vehicle has a negative ground system. Negative ground systems
are the most common.
4. For negative ground systems, connect the positive (red) alligator clip, or
ring terminal to the positive battery post. Then connect the negative
(black) alligator clip, or ring terminal to the vehicle chassis. Do not make
the negative charger clip or ring connection to the carburetor, fuel lines, or
thin, sheet metal parts. Make that connection to the engine block or a
heavy gauge metal part of the frame.
5. For positive ground systems, connect the negative (black) alligator clip, or
ring terminal to the negative battery post. Then connect the positive (red)
alligator clip, or ring terminal to the vehicle chassis. Do not make the
positive charger clip or ring connection to the carburetor, fuel lines, or thin,
sheet metal parts. Make that connection to the engine block or a heavy
gauge metal part of the frame.
6. Connect the AC power plug to the electrical outlet.
ADDITIONAL CHARGER INFORMATION
AUTOMATIC
CHARGING
MONITORING:
The BATTERY TENDER® CHARGERS are completely
automatic and may be left connected to both AC power and to the battery that
it is charging for long periods of time. However, it is prudent to periodically
check both the battery and the charger for normal operation during these
extended charging periods.
The charger output power, voltage, and current all depend on the condition of
the battery that is being charged. Both BATTERY TENDER® CHARGERS
have status lights that indicate the operating mode of the charger, and the
condition of the battery that is connected to the charger.
The chargers operate in one of the 3 primary charge modes: the bulk mode
(full charge power, constant current, increasing battery voltage, battery is 0%
to 75% or 80% charged), the absorption mode (high constant voltage,
decreasing current, battery is 75% to 100% charged), or the storage/float
maintenance mode (low constant voltage, minimal charge current, battery is
fully charged, typically 100% to 103%).
When the battery is fully charged, the green status indicator light will turn on
and the charger will switch to a storage/maintenance charge mode. Both
BATTERY TENDER® CHARGERS will automatically monitor and maintain the
battery at full charge.
AND
BATTERY
STATUS
5
SPECIAL FEATURES:
have the following special features:
SPARKPROOF:
The battery charger DC output leads, either ring
terminals or alligator clips must be connected to a battery before an output
voltage is developed by the battery charger.
SHORT CIRCUIT PROTECTION:
short circuit connection directly across its DC output terminals indefinitely
without any risk of either electric shock or excessive heat.
REVERSE POLARITY PROTECTION:
protected internally against any damage due to the DC output leads being
connected to the opposite polarity battery post. No damage will result to either
the battery or the battery charger.
TEMPERATURE COMPENSATION (BT PLUS Only):
voltage is compensated at -3.5mV/ °C/Cell. This increases the output voltage
in cold climates to keep the battery from being undercharged and, more
importantly, reduces the voltage in high temperature climates to protect the
battery from overcharge.
TIME REQUIRED TO CHARGE A BATTERY:
The BATTERY TENDER® CHARGERS charge at a rate of either 0.75 Amps
(0.75 Amp-Hours per hour) or 1.25 Amps (1.25 Amp-Hours per hour).
Therefore, a fully discharged 15 Amp-Hour battery will take approximately 16
hours or 9.6 hours respectively, to recharge to 80% capacity. Some large
automotive or marine, deep cycle type batteries may take several days to fully
recharge.
WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY
LOW VOLTAGE:
If you try to charge a dead battery having a voltage below 3 Volts, the
BATTERY TENDER® CHARGERS will not start to charge because an internal
safety circuit prevents the battery chargers from generating any DC output
voltage.
If a 12 Volt, Lead-Acid battery has an output voltage of less than 9 volts when
it is at rest, when it is neither being charged nor supplying electrical current to
an external load, there is a good chance that the battery is defective. As a
frame of reference, a fully charged 12-Volt, Lead-Acid battery will have a rest-
state, no-load voltage of approximately 12.9 volts. A fully discharged 12-Volt,
Lead-Acid battery will have a rest-state, no-load voltage of approximately 11.4
volts. That means that a voltage change of only 1.5 volts represents the full
range of charge 0% to 100% on a 12-Volt, Lead-Acid battery. Depending on
the manufacturer, and the age of the battery, the specific voltages will vary by
a few tenths of a volt, but the 1.5-volt range will still be a good indicator of the
battery charge %.
STATUS INDICATOR LIGHTS: The following describes the
indicator light operation: Note that the JUNIOR has a single light
that will shine either RED or GREEN, while the PLUS has two
separate lights, one RED and one GREEN.
The BATTERY TENDER® CHARGERS
The battery charger can sustain a
The battery charger is
The output
NOTE:
6
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