How To Fix KARCHER Window Vac Not Charging? – 5 Fixes!

KARCHER Window Vac is a handy tool that makes glass cleaning easy. It works great for vacuuming condensed moisture from windows, mirrors, and car windshields. I purchased this tool in 2021, but last week it stopped working. I found the charging issue when I inspected my device.

Is your glass window dirty because your KACHER Window Vac is not charging? The issue is probably with the faulty charging circuit module or a dead battery because of moisture leakage inside the chamber.

You can still fix the charging issue of your KARCHER Window cleaner. In this guide, I’ll explain how to fix Karcher Window Vac not charging issue.

Also Read: How To Fix Dyson Vacuum Not Charging?

KARCHER Window Vac Disassembly

Why is My KARCHER Window Vac Not Charging?

A dirty charging port, broken or frayed charging cable, defective charging circuit, and a bad lithium-ion battery is the most common reasons your KARCHER Window Vac is not charging.

It mostly happens due to moisture inside the circuit box where all electronic and mechanical parts are installed.

In my case, the problem was with the lithium-ion battery. I replaced the battery, and my device came back to life.

You can buy a 18650 Li-ion battery replacement from Amazon – Check This! The charging board module will cost you approximately $5 – Check This!

Also Read: How To Fix Rooba Vacuum Not Charging

How To Fix KARCHER Window Cleaner Not Charging?

KARCHER Window Vac Charging

Try these solutions if your window vacuum cleaner won’t charge when plugged in-

1- Clean charging port

KARCHER Window Vac Charging Connector

A dirty charging port is one of the most basic reasons for charging issues. Use a can of compressed air to clean the charging port. Also, check if any dirt or debris is blocking the flow of electricity.

Also Read: How To Fix Xiaomi Roborock Not Charging

2- Use another power outlet

I know it’s basic troubleshooting, but often problems are associated with the wall outlet, and we keep troubleshooting the device.

If you have cleaned the charging port, try plugging your charger into another power outlet. It could be possible that your power outlet is faulty.

Also Read: How To Fix iLife Robot Not Charging

3- Try a new charger

KARCHER Window Vac Charger

Before going to an internal issue, ensure that your charger is functioning properly.

If you’ve another KARCHER charger at home, try that. If the problem still persists, then it’s time to open up your KARCHER window vacuum.

Also Read: How To Fix Lefant Robot Not Charging

4- Check the circuit module

KARCHER Window Circuit Module

The next thing you have to check is the circuit module. For that, you need to disassemble your window vac.

Here you need a few tools to open up your KARCHER vacuum cleaner. You should have a set of screwdrivers, safety gloves, a knife, and some dry clothes.

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  1. First of all, detach the vacuum head apart from the device.
  2. Remove all the rubber covering with the help of a knife (do not cut them because we’ll use them again).
  3. Unscrew everything and separate both covers carefully.
  4. Remove the logic board outside.
  5. Test the battery with a multimeter and replace it if the reading is less than 1.5 volts. Buy this battery replacement on Amazon.
  6. Clean the circuit module with rubbing alcohol and wipe it with a dry cloth.
  7. Connect the charger and check the voltage where the battery terminals connect. (There should be more than 3.7V reading, if not, replace the circuit module also).
  8. Oil the electric motor.

Connect the charger and check whether your window vacuum battery is charging. If not, you must buy a new device to clean your glass.

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I hope this guide was helpful and you can fix your KARCHER Window Vac not charging issue. Please let me know in the comments section below if you have any doubts or queries. I would be happy to help.​

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One Comment

  1. David Smith says:

    “Check the battery with a multimeter and replace it if it’s faulty”.

    How? What should your multimeter be set to? What reading should a healthy battery offer? What will determine that it is a faulty battery?

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