The hsv charger works strangely

Make sure the contacts are clean on both the charger and HSV.

Thanks, Fred I cleaned the magnetic contacts of the charger and the device with soap and water and dried well. It didn't help though. Could it be the coconut oil that I used with the water-based lubricant? Should I use some other substance in addition to the cleaning?

Is the HSV still functional after your three hour session? If so, continue using it till it quits, then try the charger again.

Yes, it still worked for more than 3.5 hours after the previous 3-hour session and it's still not empty. Do I have a super battery.
Yesterday I tried to charge the toy after the 3.5 h session; the same problem, the charger light flashed a few times and then the led light was on
This morning it was charging;blinking light for at least 0.5 h or longer; I couldn't keep watching it any more, I had to leave. Could moisture be reason for my charger problem? (One night without the magnetic contacts,no moisture anymore and it was charging again).

My Hsv works a bit strangely when I try to turn it off with a double click, it doesn't turn off, but the toy makes a sound like a drill,  it doesn't feel good. Only the second double click will turn off the device, I hope. Or is the device still on (vibrations 1-8)

I made a video of my odd drill.

Posted by: @buttin

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I made a video of my odd drill.

 MOV_0818.mp4

The video was not complete, sorry