Battery powered PIR light failing to switch off

[GreensandsParticipant @greensands]

I have a pair of Lyyt battery PIR security lights as shown above which I use to illuminate the path out to my garage and they have performed well to the task. Strange thing is that within the last week or so and after giving good service both units are now failing to work properly in that they come on but are not switching off. The light output is still very effective but presumably the PIR sensor has become fauty. Is there any logical explanation for this sort of behaviour. I would be loathed to lose them as they have been very effective in the past.

[GreensandsParticipant @greensands]

[Clive FosterParticipant @clivefoster55965]

If they have a solar panel and rechargeable batteries its likely that the batteries are getting old and no longer holding full voltage. Control circuits need more volts than lights in most designs.

I had similar issues with some of the large ones from LiDL after 7 or 8 years. New batterries sorted them.

Damp getting into the PIR head and eelkctronics is also a possibility. In general such things are poorly sealed with little attention paid to ventilation. One of my LiDL ones died due to damp in the electrics.

Clive

[V8EngParticipant @v8eng]

A good starting point with stuff like this is to switch  off for about 5 mins (if possible) then on again.

My two indoor ones (can’t think of make) do all sorts of odd things if the replaceable batteries get low.

Edited By V8Eng on 28/03/2022 21:59:37

[Ady1Participant @ady1]

With the lights I use it starts happening when the batteries get run down, weird things can happen when the voltages start to dip

Sometimes it fixes itself but I usually need to plug in newly recharged batteries

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Clive Foster on 28/03/2022 21:47:22:

If they have a solar panel and rechargeable batteries […]

.

But they would appear to be these : **LINK**

So three new Alkaline AAAs would probably be a good first step.

MichaelG.

[Author]

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