Teardown: SILVERCREST Li-lon Rechargeable Handheld Vacuum Cleaner

I bought some years go SILVERCREST Li-lon Rechargeable Handheld Vacuum Cleaner. After those years it does not work properly anymore: it runs just few seconds even though fully charged and then did not start at all. I thought that maybe batteries were going bad. Time for tear-down:

Gg

Opening the device…

Here is the elecronics. There is not very much. There is battery pack, control electronics board, elecrical motor and switch/LED board.

After some debugging it seems that the motor has gone bad. It needs quite a bit for force to rotate. It now takes so much current that overload protection on the circuit board kicks in before motor starts to rotate. The motor take many amperes of current from external power source when I removed it and tested with lab power supply. It seems clearly that there is something wrong on the motor.

I don’t think it is worth of the trouble to try to fix it. It is time to get a new handheld vacuum cleaner…

4 Comments

  1. Gwido says:

    I’ve had 3 silvercrest handheld vacuum cleaners over the years all bought from Lidl. They seem to spend around 1-2 years working tops and then get the problem as you mentioned. I don’t think it is worth buying silvercrest again after 3 of the same brand. I will go for something else – some other brand.

    Reply
  2. Irina says:

    Solved it! Narrowed down the problem to the brush, as the motor was running without any problems when I was taking the brush off. I took out the small brush out of the end of the vacuum (you can literally take it out completely) and cleaned all hair out of it (there was hair around the main screw so I think that was creating the main problem) and now the vacuum works great again :)

    Reply
  3. Patrick O'Farrell says:

    Can the Lithium battery be replaced? My charging light flashes between red and green. When I turn it on, it runs for a few seconds and shuts down?

    Reply
    • Tomi Engdahl says:

      Technically if you could find a suitable replacement battery somewhere, I thinks it should be possible to replace the battery.
      There are several safety details that need to be kept in mind when working with lithium batteries, because they can start fire or even “explode” if handled carelessly or damaged.
      I have not tested that in practice battery replacement – I ended up getting a new device.

      Reply

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