Troubleshooting a Schumacher Battery Charger

All the Schumacher batteries have a standard design in which they are set to working automatically. Like other electronics, a Schumacher battery charger can stop working or even have other more significant issues. Remember, the impossible is nothing, so you are not supposed to stress up your mind if the Schumacher battery stops working. It is normal for any tool to malfunction or break down.

This article will help you identify and solve some of the issues related to the Schumacher battery charger, and it continues to function normally. You should follow every step given below keenly and adhere to all the guidelines for better results. Observe all the precautions given on handling the Schumacher battery and electricity as a whole.

Checking your battery’s conditionChecking your battery’s condition

In case of any problem, it is always essential to understand that the battery charger is not always the problem. You should be able to check your battery’s condition first and then deal with the charger where need be. Rushing to conclusions before spotting the problem can lead to other issues as you try to fix and connect cables where unnecessary.

Steps on how to check the Schumacher battery’s conditionSteps on how to check the Schumacher battery's condition

Step 1; find a voltmeter to help you measure the voltages. Once you get the voltmeter, check your battery’s voltage. The voltage should not be anything less than 12.4 volts and nothing more than 12.7 volts. It should read between the two values. If the measurements are between the two values, then your battery is in good condition, and you can check the charger.

Step 2; if you do not have a voltmeter, you can use a multimeter also to read the measurements. If your multimeter is not working, or you do not have one, it is also allowed to use a power probe.

Step 3; immediately you are done with the voltage measurements, check for any corrosion in your battery or any leaking on the battery. If there is none, proceed to check the condition of the battery charger as your battery is in good condition.

Problems on Schumacher battery chargers and their possible solutionsschumacher battery charger troubleshooting

  1. The battery charger does not respond or recognize the available battery. If the charger does not recognize the battery, the problem could be the battery mostly and not the charger. A battery charger cannot turn on if the volts of the battery are below 4 volts.

The main reason why this problem might occur is, could be the battery was discharged deeply, and thus, it cannot be recognized by the charger.

  1. The charger might not turn on. It could be that the charger is not connected correctly. Check for loose connections but if the connections are well made, check the regulator board of your main power. If you find that the regulator board is a problem, you need to replace it with no further ado.

Once you have replaced it, ensure you have double-checked to make sure the connection is securely established.

  1. The battery might not charge even after switching the power ON. It is a problem that occurs with most chargers. If this happens, you need to follow the below steps.
  2. Rock your battery clips front and back. It helps confirm the connection. If they are well fixed, proceed to the next.
  3. Try out the charger using a different appliance. If the charger charges the new device, then the problem is automatically the original battery. If it does not charge, then the problem is with the charger, and you need to replace it.
  4.  A clicking sound when the battery is charging. Clicking sounds are mainly experienced when one is using the Schumacher battery. When you start hearing the sounds, please do not disturb the battery and give it at least 20 minutes to charge. Ensure that all the leads are correctly plugged in. if they are and the problem is still on, then you need to replace the battery. If you replace it and the sounds continue, then the connection could be the problem.
  5.  The Schumacher battery clicks on and off. These chargers have in-built protection systems. When there is an overheat, the systems will click the battery off and prevent it from damage. If there is no overheating and the temperatures are normal, it is better to unplug your charger and recheck the connections. You can, in other ways, reverse them.
  6.  A blinking yellow light on the Schumacher battery. There are two lights on the Schumacher battery charger. A yellow light indicates charging is taking place and a green light that shows the charging is complete. If you see a blinking yellow light, the battery is on abort mode, which prevents the battery from charging to completion. It would help if you unplugged it, gave it some time, and then plugged it back in for the charging to complete.

 Guidelines when using a Schumacher battery charger Guidelines when using a Schumacher battery charger

  • Find a suitable area to do the charging. With this, you should find a room or a spacious room well ventilated to allow the battery to breathe. When you charge your battery in a well-ventilated area, the possibilities of overcharging are minimal.
  • Ensure you use the correct charging modes on different batteries. You should always be aware of what charger your power system needs. Depending on the model of your charger, there will be some differences. Some can prevent overcharging while others don’t. Maintain or float mode uses cycles that help it avoid overcharging while trickle charging does not have the system.

You must fully understand the capabilities of your battery to know what kind of charging modes to use. You can do this by doing some online research or reading the user’s manuals when purchasing the battery. The study will help you learn more than you only need, and hence you can handle various occurrences with your battery and your battery charger.

  • It would help if you always used the correct voltage charger. Once you are aware of the voltage, you can know which controller to use with ease. When you are using automobiles or any other small appliances, you should use a 12 volts battery. A lawnmower uses a 6 volts battery.

Most Schumacher batteries can use both the 6 and the 12 volts battery. You should be keen not to use too high voltage as extremely high voltage will destroy the battery. Incorrect regulation of voltage will tamper with the functioning of the battery.


 You should be able to spot even the minor problems on your Schumacher battery charger by now. If you are still not able to troubleshoot your battery charger after following the steps and guidelines, go through your manuals to clearly understand the model of your battery charger. Once you are done, make the connections afresh and check on the functioning of your battery and your battery charger. If no improvements are noted, you need to find a solution.

It is always advised to contact an electrical expert or a professional to help you troubleshoot and make replacements where necessary. Do not try to handle a problem you are not sure about, as it may cause more damage to your battery or the systems and even risk your life. Always remember you are dealing with a battery that produces hydrogen gas, and thus, you should always be keen not to ignite the gas; otherwise, you will burn.                                                                                                                                                                                           

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