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14. Risk of Explosion! If you detect gas, do not switch off the unit. Do not disconnect the charging • clamps. Immediately ventilate the room by opening windows and doors. Do not switch on an electrical fan. When the air has cleared of gas, unplug the unit from the electrical outlet. Charge the battery in a well-ventilated area.• To prevent sparking due to electrostatic discharge, never wear clothes made of • synthetic materials when charging the battery. Avoid creating or working around any flames or sparks; flames or sparks can ignite • the gasses caused by charging and cause an explosion. Unpacking When unpacking, check to make sure that the item is intact and undamaged. If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible. Setup About Charging Batteries Batteries draw as much power as they need from the charger. The charger does not force current into the battery. When a battery is close to dead or very low charged, it will want to draw more current. When a dead or low battery is charged, the charger’s ammeter will register at the high end. As the battery charges, the reading will move down toward the low end, resting on zero, when the battery is fully charged. See FIGURE 1 below. Note: The ammeter shows the amount of current being drawn from the charger. It does not show what the charger is capable of delivering. When the battery is fully charged and registering zero on the ammeter, a small trickle charge will continue to move from the charger to the battery. If you do not disconnect the charger from the battery, eventually the heat build up from the trickle charge will cause the battery acid to boil and overcharge the battery causing damage to the battery. You must constantly monitor battery charging progress and if battery gets warm, stop charging it immediately. Note: This charger is not recommended for batteries with a built in Hydrometer eye. The reading of the built in eye will conflict with the ammeter readings. Do not plug this charger in until directed to do so in the following pages of this manual. Preparing the Battery If necessary, remove the battery from the vehicle to charge it. When removing the 1. battery, always remove the grounded battery cable first. Reminder: The vehicle’s engine must be OFF when removing, replacing, or charging a battery. REV 08f, 09h If necessary, add distilled water to the battery cells before charging. Read and follow 2. the battery manufacturer’s instruction manual. Never add water to a battery while attached to a charger, or in close proximity to the charger. Do not overfill. Clean battery terminals.3. Check the battery manufacturer’s instructions on whether or not to have the cell caps 4. on when charging. If not stated, leave the cell caps on. CHARGING BATTERIES Caution: Do not overcharge maintenance-free batteries. 1. Place the Battery Charger and battery in a well-ventilated area. 2. Determine the voltage of the battery from the battery labels. 3. Push the Charge / Start switch to the Charge mode. Push the Select Setting switch to the desired battery voltage: 6V or 12V. 4. If charging a battery while in a vehicle, leave the hood open and do not leave the charger unattended. Separate the charger and battery as much as possible. 5. With the Battery Charger unplugged, connect the positive (red) Cable Clamp (2) to the positive terminal of the battery. If charging a battery mounted in a vehicle, first remove the vehicle’s red cable from the battery; otherwise damage may occur to the vehicle’s electrical system. If in doubt, refer to the vehicle’s service manual. 6. Connect the negative (black) Cable Clamp (2) to the negative terminal of the battery. 7. Plug the Power Cord (3) into the electrical outlet. 8. Note: If the Red Reversed Connection LED is lit, the cables are connected to the wrong terminals of the battery. If this happens, immediately switch off the charger, unplug it, and switch the connections. For a quick charge assist to enable starting the engine, charge for 5 to 10 minutes. For a full charge, leave the Battery Charger running. If the charger is in manual mode, it must be monitored and shut off when the battery is charged; NEVER leave a battery unattended while charging. If the charger is in automatic mode, when the battery is fully charged the Battery Charger will automatically cycle through a trickle charge, and the green LED will remain lit. Optionally, only with the battery removed from the vehicle and the charger in automatic mode, the Battery Charger can be left on while connected to the battery. When the battery becomes weak, the Battery Charger will automatically turn on. When the battery is once again charged, the Battery Charger will automatically shut off. It will, however, keep sensing the charge of the battery. Note: Do not leave Battery Charger on for long duration without checking the distilled water level of the battery; do not allow distilled water to ...
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