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you are charging a lead acid deep cycle battery. Plug the
ac power cord into the wall outlet.
Select either 12 A, 12 V position if you are charging large
lead acid batteries such as those used in automobiles,
boats, trucks, vans, farm equipment, etc. Plug the ac
power cord into the wall outlet.
Select either 2 A, 12 V position for charging lawn tractor,
motorcycle, snowmobile, or other small batteries. Using
this setting for large automotive, truck, or marine
batteries will not allow the charger to shut off
automatically. Plug the ac power cord into the wall outlet.
The meter will read up to 5 amps and taper down to
around 1 amp as the battery reaches full charge.
Select 12 A, 6 V MANUAL position for charging 6 V
batteries used in automobiles, trucks, and farm
equipment. This setting does not taper. Plug the ac
power cord into the wall outlet.
12A 12V
AUTOMATIC
DEEP CYCLE
12A 12V
AUTOMATIC
70A 12V
2A 12V
AUTOMATIC
ENGINE START/
ACTIVATE
Rotate the selector switch to the 70A 12V position (70A
12V ENGINE START/ACTIVATE) for assistance in
starting an engine with a weak battery. Plug the ac
power cord into the wall outlet.
Note: For best results, charge the battery first for
10–20 minutes using the 12 A 12 V position
before attempting to start the vehicle in the 70
AMP START position.
Crank engine for 3–4 seconds. If engine fails to start,
charge battery for another 5 to 15 minutes and attempt
to start the engine again.
Note: Do not use this battery charger to charge
batteries larger than those typically found in
boats, passenger cars, or light trucks.
Preactivation of a Discharged Battery
Preactivation will raise the voltage in a 12 volt battery to
a level high enough to allow the charger to operate in the
automatic mode. This step is required if you have been
attempting to charge a low or dead battery and the
battery has not been accepting any charge.
Ξ Select the 12 A 12 V MANUAL position with the
rotary knob
Ξ Plug the ac power cord into the wall outlet.
Ξ Charge in this position for 5–15 minutes.
The battery should now accept the charge in the
OFF
12A 6V
MANUAL
12A
12V
MAN.
2A 12V
MANUAL
automatic position and the amperage meter should
indicate 6–15 amps. If not, the battery should be
professionally tested. If battery is okay, call Technical
Service at (866) 236-0044.
MODEL 87150
This charger will taper its charge as the battery
approaches full charge. Refer to Section L, Time to
Charge to determine how long to charge your battery.
Step 1: Make Connections
Make sure ac power cord is unplugged from wall outlet.
Make proper connections to the battery as explained in
sections F through H.
Step 2: Select Setting
Select the 100 AMP
START position if you are
attempting to start a car
with a weak battery (12V
only). Plug the ac power
cord into the wall outlet.
Note: For best results,
charge the
battery first for 10–20 minutes using the 15 A 12
V position before attempting to start the vehicle
in the 100 AMP START position.
Engage the starter for 3–4 seconds; if engine fails to
start, charge the battery using the 15 A 12 V position for
another 10–20 minutes and attempt to start the engine
again. Be aware that a typical starter on a vehicle may
need 250-500 amps to start the engine.
Select the 15 A 12 V position if you are charging large
lead acid batteries, such as those used in automobiles,
boats, trucks, vans, farm equipment, etc. Plug the ac
power cord into the wall outlet. The meter will read up to
15 amps and taper down to 6 or 7 as the battery reaches
full charge. When the battery is fully charged you must
shut off the charger within 2 hours or overcharging will
occur.
Select the 2 A 12 V position for charging lawn tractor,
motorcycle, snowmobile, or other small batteries. Plug
the ac power cord into the wall outlet. The meter will
read up to 5 amps and taper down to around 1 amp as
the battery reaches full charge.
Select the 15 A 6 V position for charging 6 volt batteries
used in automobiles, trucks, and farm equipment. This
setting does not taper and also does not shut off
automatically.
Note: Do not use this battery charger to charge
batteries larger than those typically found in
boats, passenger cars, or light trucks.
MODEL 87151
This charger is equipped with Auto On-Off Technology.
After connecting to a 12 volt battery, the charger needs
to sense a minimum voltage condition to begin charging
and it will stop charging when it reaches the maximum
voltage condition, but it will continue to monitor the
battery charge level. The charger will "hum" as it
monitors. If the battery charge level drops, the charger
will begin charging again.
8
SELECT SETTING
100 AMP
15A
2A
START
12V
15A
6V
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