Question about Karcher Wv 50 Cordless Lithium-ion Window/flat Surface Vacuum

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Karcher window cleaner wont turn on

Put it on charge and appears to be charging, once I take it off charge it shows battery low and doesn't turn on?

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Why is there no green light or red docking showing it is charging?


Sometimes the contacts between the battery and the iRobot get corroded...you can try using a small piece of sandpaper to lightly scuff/clean the battery contacts. Once you put it back together, try the reset function mentioned previously.

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Should the red light on my 15.6v dustbuster turn green when it's fully charged? It doesn't.


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Hi, I have Microtek 810 Inverter, it is charging properly, problem starts when mains goes off and inverter is in Battery mode, then output of inverter shows no voltage, even i conected multimeter to...


Good day!

You have to do is:
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Thank you and good luck.

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1 Answer

My roomba appears to charge and has a solid green light when finished, but when I take it off the charger and try to turn it on I get the 4 note song and blinking red light like the battery is low even...


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1 Answer

IRobot 530 charges intermittently


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