* Lead-acid battery (6-volt or 12-volt)
* Voltage eliminator
* Alligator clip cables
* Voltmeter
* Safety goggles
Step 2: Prepare the battery.
1. Warning: Wear safety goggles to protect your eyes from battery acid.
2. Clean the battery terminals with a wire brush to remove any corrosion.
3. Check the battery water levels and add distilled water if necessary to cover the plates about 1/2 inch.
4. Close the battery caps securely.
Step 3: Connect the voltage eliminator to the battery.
1. Connect one positive clip of the charger to the positive terminal on the battery.
2. Connect the other positive clip to the output voltage terminal on the eliminator (labeled "+").
3. Connect the negative clip from the charger to the negative terminal on the battery.
4. Connect the other negative clip to the input terminal on the eliminator (labeled "-").
Step 4: Set the voltage regulator to the correct setting
1. Set the eliminator to the same voltage as the battery (6-volt or 12-volt).
Step 5: Charge the battery.
1. Turn on the eliminator and allow it to charge the battery for several hours.
2. Check the voltage of the battery periodically with the voltmeter.
3. When the battery is fully charged, the voltage will read 12.6 volts (for a 12-volt battery) or 6.3 volts (for a 6-volt battery).
Step 6: Disconnect the voltage eliminator from the battery.
1. Turn off the eliminator.
2. Disconnect the negative clips from the battery terminals.
3. Disconnect the positive clips from the battery terminals.
The battery is now fully charged and ready to use.
Note: The voltage eliminator must be able to supply the same amount of current as the battery requires to charge. If the eliminator is not able to supply enough current, the battery will not charge properly.
