Solar garden lights ALWAYS get water in them. Even if quite well shielded against direct water ingress, the natural thermal expansion and contraction of the air inside will pull water in through any slight gap (even at molecular level). Once the water is in it will then repeatedly evaporate and condense as the temperature varies, and this will ensure it reaches all the delicate bits to corrode them.
This same water ingress effect is the bane of outdoor electrical equipment where water will even find its way in through cables. In the case of solar garden lights it's a significant issue due to the presence of close DC connections on the PCBs as the moisture will cause rapid electrolytic corrosion.
The firefly lights I'm repairing here seem to suffer the common fate of letting water in via the solar panel. But that is easily fixed. And the same techniques can be used on many other lights to protect them before they have even experienced their first drop of rain.
If you enjoy the videos on this channel then you can help support it with a dollar for coffee, cookies and technical toys at https://www.patreon.com/bigclive

13 thoughts on “Waterproofing solar firefly globe lights. and others.”
  1. Avataaar/Circle Created with python_avatars Rich Ernst says:

    Dang, was hoping for the 3M number of this tape as I can't find it with my searching of all weather and garden etc. tape. ๐Ÿ™

  2. Avataaar/Circle Created with python_avatars der Lautsprecher says:

    Ich hab auch die so laden

  3. Avataaar/Circle Created with python_avatars jimbola77 says:

    Can you laquer the board

  4. Avataaar/Circle Created with python_avatars ggdail says:

    Came for the helpful tips, stayed for what sounds like 007 giving safety advice.

  5. Avataaar/Circle Created with python_avatars Mickey Filmer says:

    I have lots thanks to you- much to the memsabs annoyance as they are hogging the washing line- looks brill at night though!

  6. Avataaar/Circle Created with python_avatars w5cdt says:

    I've discovered the enclosures are the weak link in solar light reliability. Buy them and seal them well before deployment and they will last twice as long.

  7. Avataaar/Circle Created with python_avatars helen donaldson says:

    Great videos. I've learnt so much and now fixing stuff๐Ÿ˜

  8. Avataaar/Circle Created with python_avatars G Nerd says:

    )(,โ€™!๐Ÿ’ก

  9. Avataaar/Circle Created with python_avatars G Nerd says:

    Use farts that will keep the water out

  10. Avataaar/Circle Created with python_avatars Andrew Isotope says:

    Clive I've recently brought one of these and would like to know how long they take to charge 'if at all possible this time the year?'

  11. Avataaar/Circle Created with python_avatars arunavadas1 says:

    Too bad those are not available in India

  12. Avataaar/Circle Created with python_avatars Dead Prophet says:

    i use acrylic clear non-yellowing paint to seal my solar lights. it seem to work for me.

  13. Avataaar/Circle Created with python_avatars FP4 Man says:

    Is there enough space inside the casing to change the button cell for a slightly higher capacity version?
    Poundland have these lights back in stock and also have a multicolour version.

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