Self testing emergency light.

I'll guess it's the green photoluminescent material? You can get the blanks for those panels with no image on them. They look really good in a dark room.

Big Clive

I work at a place that deals in industrial stuff and I managed to snag a self lit exit sign that uses glow in the dark materials.

Michael Thompson

they are permitted under nfpa... and i think a very select few cities have mandated.. but florida as a whole still follows the nfpa red. slowly changing over... but my company continues to buy reds becasue dont want to replace all .... 400? 600? however many of them we have.... at the same time

William Huckaba

I could have sworn I've seen some green ones here (in FL)..

For long term standby NiMH is much easier to manage, just trickle charger it continuously rather than needing battery management. Given that power outages are rare the battery will be rarely cycled anyway. I think the instructions probably just mention it in case you are in a situation where there has been a period of power instability as a worthwhile check before you replace the unit.

Charleso

2x AA Nimh == 2.4 volts lithium ion 18650 == 3.7 - 4.2 volts

God 420

You mentioned memory effect in the video. I wonder why they have used 2x AA Nimh when they could have used a lithium ion 18650 which wouldn't do that?

Gadgetman

The worst part of any Big Clive video...when it ends.

Michael Thompson

Oh Clive, this one is NICE!

Michael Thompson

Especially if they fitted them in hotel bedrooms. Especially annoying if it failed its self test and started beeping.

Big Clive

That would be pretty freaky if you forgot or didn't know about the self test behaviour. Deus ex machina...

Moz in Oz

We use this type of light throughout our production facilities, great video clive..

Richard Boyce

I wonder how long before they finally change emergency exit signs in america green... there are some states (California) that have made the swap, but at least here in Florida still red.... at least I have started to see some edge lit and nice looking led ones like that .. even if they area red.. here.

William Huckaba

I'm definitely interested in one as well. Looks well constructed. Time to hit ebay

AESFTW

Thanks. I may just do that.

Try an eBay search for emergency exit sign. The trickiest bit being finding a seller who would ship it if you didn't live in the UK. For decorative use you could stick a bit of standard LED tape on the edge of the bare panel.

Big Clive

I quite fancy one of these for mainly decorative purposes

I'm guessing that they probably charge them at quite a low rate, to increase battery service lifetime, because in normal situations you would go many days between discharge events anyway.

John Ridley

The recommended full charge time for the full 3 hours run time is 24 hours. The cells may have quite a high self discharge rate.

Big Clive

We use these emergency lights on our carnival float (a normal light version, not an exit sign), we use it to illuminate the drawbar between the trailers in the event of a generator fault. It doesn't last very long through, I'm guessing because we're not charging it for long enough. What would be a typical charge time for the battery in these types of lights, assuming the battery starts off empty? You can see it in my lastest video: <a href="https://youtu.be/DK8ibBUWd5M?t=1972" rel="nofollow noopener" target="_blank">https://youtu.be/DK8ibBUWd5M?t=1972</a> at 32:52 I had to modify it with a switch though because we don't want it on when we're travelling on the road, I just cut the wire to the LEDs inside and soldered in a toggle switch.