Quick Cable Q720 - Manual (Page 4)

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these batteries as indicated in the LENGTH OF CHARGE table. If one battery is charged and the other discharged, the discharged battery should be
removed from the vehicle and checked. When attaching the charger to this type of vehicle the charger should be attached to the battery which is wired
closest to the starter. This allows the charger to provide maximum starting power to the starter motor by minimizing the voltage drop in the engine
cables.
PARALLEL CHARGING
This charger may be used to parallel charge up to 10
batteries with a bus bar kit, or by using a minimum 6AWG
gauge booster cables to connect the batteries together in
parallel.
CAUTION: Do not connect 6 and 12 volt batteries in
parallel with each other.
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 sulfating to allow the battery to accept a charge must be closely
watched to avoid excessive charge rates as the battery begins to charge and overheat. 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 charger’s lowest rate when turning the charger on. Set the charger to the charger’s highest rate for the voltage of the battery being
charged.
CAUTION: NEVER CHARGE A BATTERY AT VOLTAGE 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 sulfating 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.
WIRING DIAGRAM