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Revisiting rechargeable PIR lights

It's a while since I've looked at this type of light, and unfortunately in this era of political and corporate utility mismanagement it has become important to have a backup source of light that will spring into action during a power outage.

I've been doing a long term test on earlier versions, and they are actually very good for softening the effect of power outages by providing comfort lighting, or just allowing you to walk around the house at night without switching other lights on.

https://www.youtube.com/watch?v=r2mpU5Q7YeA

Revisiting rechargeable PIR lights

Comments

I've been scammed! Sensors only work if you entirely cover them with palm of your hand. Some elderly folk with failing eyesight like stair lights to illuminate BEFORE it turns Pitch Black. Nope, never again!

Andrew Donaldson

I've featured a few of the intelligent emergency light lamps. Some were very shady.

Big Clive

Clive, have you seen this type of bulb https://www.takealot.com/eurolux-battery-globe-light-bc/PLID46854848. Brand is South African. They operate like normal bulbs and stay on when the power goes out, albeit at a lower intensity. How they detect an outage is interesting. Let me know if you'd like me to send you a few.

Kim & Nix

Perfect timing Clive. The power went out at my place in the Ribble Valley in Lancashire earlier and won't be back in a while it seems. Currently American Power Conversion UPSes are holding all my kit up. A few PIR lights might be the next purchase...!

Rupert Kent

As a backup source of light in the house I use this kind of unit (got it from a local home-improvement store): https://www.amazon.com/dp/B07MW9ZRXJ/ - not having to charge it is a bonus.

Wow. Basically nothing. Thanks for checking

Keith Cassidy

As time goes on you may notice the bits of the puzzle all falling into place and making more sense.

Big Clive

The round ones were featured in another video and are equally hackable. They are much brighter with the front cover popped off.

Big Clive

That's good because they always increase the standby current noticeably.

Big Clive

The standby current with sensor active is 22uA.

Big Clive

I woke up at 5am today and was sitting on the couch enjoying a cup of coffee while watching this video. No joke - I laughed so loudly at "douche flute" that I woke up both my daughter and my wife. Thanks for giving me a chuckle to start the day, Clive! 😆

Todd Sharp

I already ordered some more - I think the technical folk are all probably thinking the same thing. Mine just arrived in the post this morning. I opted for the round 8 led ones, I haven't got around to opening one up yet. Until then I'll enjoy your video and compare circuitry later 🙂

I meant while running the PIR sensor.

Keith Cassidy

Well timed, as our stairs unit of 25yrs has just packed up! Sensor is OK but relay knackered.

Andrew Donaldson

Damn Big Clive. I love the totally genius break down. Still way way way over my head but so perfectly described. Thank you.

Dave Frederick

What, no remote controllers?

Curtis Hoffmann

It is probably in the pico amps range.

Frank

When you put cells in parallel you do not need balancing. You only need to balance cells that are in series. Pay attention when connecting cells in parallel, all cells need to be on the same voltage before you tie them together.

Frank

How much current does this draw in the standby state? I'd be interested to know how long the battery would last in that state...

Keith Cassidy

Would you need to do some form of balance charging with multiple cells?

JT


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