Associated Equipment US18 User Manual
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ASSEMBLY INSTRUCTIONS
1.
Remove two screws securing handle to charger. Attach the handle in an upright position.
OPERATING INSTRUCTIONS
CAUTION
- This battery charger must be fully assembled before operating. Failure to do so may result in risk of
injury.
TO CHARGE BATTERIES
Make the connections to the battery per the instructions in the previous sections. Determine if the battery is 6 volt or 12
volt. Set the CHARGE VOLTAGE switch to 6V for a 6 volt battery or 12V for a 12 volt battery. If a higher charge rate is
desired for a 12 volt battery set switch at 12 HIGH. DO NOT charge a 6 volt battery at switch setting other than 6V or
charge a 12 volt battery at 12V START (damage may occur to the battery). The Ammeter shows the amount of current
being delivered to the battery. Length of charge should be per the above chart and instructions.
12 VOLT ENGINE START
Turn off all lights and accessories in the stalled vehicle. Connect the charger to battery per previous instructions. Charge
the battery on 12 HI for at least five minutes before attempting to start the vehicle. Put the switch in the 12V ENGINE START position. Start the
vehicle with the charger connected to the battery. Follow the duty cycle on the unit.
NOTE: DO NOT crank the engine more than 20 seconds in any five minute period; excessive cranking may overheat and damage the starter. If the
vehicle fails to start, while waiting for the starter to cool, allow the charger to continue to charge the battery.
Turn the switch to OFF and remove the AC power cord from the electric outlet before disconnecting the DC clamps.
CHARGING SULFATED BATTERIES
If your battery has sat in the discharged state for an extended period of time, it can become SULFATED. This usually is seen as a white deposit
near the top of the battery. The sulfate is formed when a battery with low water levels remains discharged for an extended time. Sulfated batteries
exhibit the characteristic of accepting no charge regardless of the rate of charge.
The charging method is two staged. The first stage of attempting to break down the sulfation to allow the battery to accept a charge must be closely
watched to avoid excessive charge rates as the battery begins to charge and overheating. The second stage is a slow charging to restore the
battery to full charge.
READ AND FOLLOW ALL PRECAUTIONS AND WARNINGS IN YOUR INSTRUCTION MANUAL BEFORE ATTEMPTING TO CHARGE
SULFATED BATTERIES. FAILURE TO OBSERVE THESE WARNINGS MAY RESULT IN PROPERTY DAMAGE OR SERIOUS PERSONAL
INJURY OR DEATH.
To recharge a sulfated battery:
1.
Attach the battery clamps as described in the instruction manual.
2.
Always use the chargers lowest rate when turning the charger on. Set the charger to the chargers highest rate for the voltage of the battery
being charged.
CAUTION: NEVER CHARGE A BATTERY AT VOLTAGES RATES ABOVE THAT OF THE BATTERY.
3.
The battery will show little or no amperage at the start of the charging process. This will continue until the sulfation begins to break down.
CAUTION: AS THE SULFATION BREAKS DOWN, THE AMPERAGE MAY RAPIDLY RISE. CONSTANT
ATTENTION MUST BE OBSERVED TO PREVENT SERIOUS OVERHEATING OF THE BATTERY.
4.
Lower the charge rate to the lowest rate for the voltage of battery being charged.
5.
Charge the battery at this low rate until the electrolyte reaches the fully charged state as described in the tables in your instruction manual. This
may take as long as two or three days.
NOTE: SOME BATTERIES MAY BE SO BADLY SULFATED THEY CAN NOT BE RESTORED TO A NORMAL OPERATING CONDITION,
REGARDLESS OF THE RATE OF CHARGE OR THE LENGTH OF TIME THE CHARGE IS APPLIED. IF THE BATTERY CANNOT BE
RESTORED TO A FULLY CHARGED CONDITION BY A SLOW CHARGING, IT SHOULD BE REPLACED.
25
30
40
40
25
30
25
20
40
40
30
20 15 15
15 10
A
M
P
E
R
E
S
10
20
30
35
20
40
0-25
20
30
25
40
40
15 30 45 60 75 90
25-50
50-75
50-75
25-50
0-25
50-75
25-50
0-25
10 10 5
5
15 10
20
25
%CHARGE
MINUTES
11.8
5.9
1.110
11.9
5.95
1.140
12.1
6.05
1.185
12.4
6.2
1.225
25%
50%
75%
DEAD
Open Circuit Voltage 12V
Open Circuit Voltage 6V
Specific Gravity
STATE OF CHARGE
STATE OF CHARGE TABLE
Cold Cranking Amps
Reserve Capacity
Ampere Hours
BATTERY SIZE
60
90
350
80+
100+
400+
40
60
275
BATTERY SIZE TABLE
LARGE
MEDIUM
SMALL
BATTERY SIZE
SMALL
MEDIUM
LARGE
CHARGE RATE Vs. MINUTES CHARGE