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CTECHI is an expert in battery solutions, specializing in ODM, OEM, and SKD for energy storage, motive power, and consumer batteries.

How to Troubleshoot 18-Volt Power Tool Battery Chargers











The battery charger rarely goes wrong because it doesn\'t have any moving parts.It just contains a separate copper wire winding, reducing the socket voltage to the voltage needed to charge the power tool battery.Battery charging is sealed so there is only one user, sometimes twoMaintainable parts on the battery charger: the fuse in the plug connected to the external power supply and the fuse on the battery charger (if any ).Plug your 18-Battery Charger for Volt power tools enters the power supply.Turn on the charger.Use the multimeter and set it to measure the voltage.If the voltage setting is variable, set the voltage range to 10 to 30 volts.Connect the two wires extended from the multimeter to 18-Battery Charger.One thread is red and the other is black, all with small metal sensors or clips.Place the sensor at the end of the red line on the central metal terminal on the battery charger.Place the sensor at the end of the black wire and on the external metal terminal on the battery charger.Please note that the terminals are marked with \"\" and \"-Positive and negative, respectively.Watch the voltage measurement on the multimeter display.If the battery charger works properly and generates a charge, it reads 18 volts.If it generates a charge, the battery may need to be checked or replaced.If it does not generate a charge, check the fuse on the charger (if any ).Remove the fuse cover by inserting a small screwdriver under the lip of the lid and lift it.Place the sensor at the end of two wires from the multimeter to both ends of the fuse.Check the multimeter.If the fuse is not blown, you will receive a voltage reading.Because you have not completed a circuit, it may be less than 18 volts;You are testing whether the current is flowing through the fuse.If you have a reading, then the electricity will not reach the terminal, which is an internal fault, so you need to get a professional check.The fuse may fuse if there is no reading, so replace the fuse.Replace the fuse cover.As before, use a multimeter to touch the battery terminal to double check.If you have a reading, your charger is working and this is the fuse in the charger.If there is no reading, you need to check the fuse in the plug.Remove the plug from the power outlet.Use a small screwdriver to pry the fuse from the fuse holder on the lower side of the plug.Remove the fuse from the bracket.Simply replace the fuse with a new fuse with the same amp rating.Plug the plug into the power outlet.Repeat the test using a multimeter and touch the battery charger terminals as before.If you have a reading, that\'s the fuse on the plug and your charger works fine.If there is no reading, the charger is out of power and needs to be replaced or repaired.

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