Schumacher SF-2151MA Battery Charger User Manual


 
3
257-800
METER AND SWITCH FUNCTIONS
D
6 VOLT, 15 AMP: Used for charging medium and large size wet-
cell, lead-acid 6 volt batteries. Do not charge small batteries
such as used in motorcycles, lawn and garden equipment.
(Manual Operation. Monitor frequently while charging a battery.)
12 VOLT, 2 AMP: The 2 amp automatic charge rate is
recommended for charging small batteries and warming large
ones. If used for maintaining the Full Charge level of larger
batteries, limit the charge period to a few days at a time.
(Automatic Operation.)
12 VOLT, 15 AMP: Used for charging medium and large size
wet-cell, lead-acid, 12-volt batteries. (Automatic Operation.)
12 VOLT, 100 AMP ENGINE START: Used for crank starting of 12
volt vehicles. The Engine Start position should not be used for
battery charging, doing so will cause the charger to overheat
and then protect itself by cycling off and on. (Manual Operation.)
METER: The meter indicates the amount of current measured
in amperes that is being drawn from the charger by a battery. In
the 15 Amp charge rate a typical discharged battery may initially
draw more than 15 Amps during the first few minutes of charge.
As the battery continues to charge current should gradually taper
to within 6 to 8 amps at full charge.
The START area of the meter is reserved to indicate when a
high rate of current is being drawn from the charger. It is normal
for the meter pointer to be in this area while cranking a vehicle.
When using the 2 amp charge rate the meter may indicate
some activity but doesn’t have the resolution to accurately display
the battery’s state of charge. For this reason you should depend
on the full charge light indicator.
CRANK STARTING:
1. Connect the charger as outlined in the “CHARGING BATTERY
IN VEHICLE” section.
2. For best results charge the battery for 10 minutes before
cranking the engine.
3. Set the charge rate selector switch to the 100 Amp start
position that matches the voltage of the vehicle’s battery
4. Crank the engine for 3 seconds, if the engine fails to start,
set the charge rate switch to the 15 Amp rate and charge the
battery for the next 5 to 10 minutes before cranking again.
5. If the engine fails to start after several tries, there maybe a
problem elsewhere with the vehicle.
BATTERY TYPE: You may select between two basic Battery
Types: Regular or Deep Cycle Battery. Both settings operate
automatically and will shut off when the battery is fully charged.
Use the Regular for all wet-cell, lead-acid batteries. (This
charger is not recommended for Gel-Cell and AGM batteries.)
Use the Deep Cycle setting for all Deep Cycle wet-cell, lead-
acid batteries. How can you tell your battery type? Deep Cycle
batteries are usually marked as such. If not, the battery will fall
under the category of "Regular" batteries. Most automotive
batteries are considered "Regular" batteries.
Some Deep Cycle batteries are designed in a way that charging
them in the Regular setting is more suitable. When charging a
Deep Cycle battery, if the Full Charge indicator lamp does not
become illuminated after a 24-hour charge period and the
charge current as indicated by the ammeter is less than 8 amps,
move the switch to the Regular setting. If the Full Charge indicator
lamp still remains off after charging, you should disconnect the
charger and have both the battery and charger professionally
tested.
REGULAR BATTERIES
AUTOMATIC OPERATION
BATTERY TYPE SELECTOR
DEEP CYCLE BATTERIES
AUTOMATIC OPERATION
START
DC AMPS
FULL
CHARGE
CHECK
BATTERY
CHARGING
0
5
10
15
100
CHARGE RATE SELECTOR
▲▲▲▲
15 Amp
6V, Manual
2 Amp
15 Amp
100 Amp 12V
Engine Start12V Automatic