Are these instant -on or do they take time to reach full brightness?
1128175
Hi: I bought 2 boxes and the first bulb I tried was defective so I sent the whole order back. Sorry I can't answer your question.
217182
Yes, they are "instant on", as soon as you switch the light on it is bright
282317
No it is not. Only time brightness changes is when it starts to lose charge till it does out completely. They only last about 2-3 hours before you have to charge them again.
375970
They're faster than most; instant on and full brightness in about 10 seconds. I use them for many purposes.
1823955
They are instant on. I'm using them in track lights and they do not need to heat up.
146538
Beats me, but they're not much brighter than the 40W-equivalent version. They are some of the nicest LED bulbs I've used though. I use a cool white one in the fridge -- it is instant-on, like an incandescent, unlike other LED bulbs I've tried in there.Note about dimming: They don't dim at the same pace as incandescents in the same fixture. In fact, they don't seem to dim at all.
1160288
Probably an hour or two... But it really depends how long the string of LED are... I can't really say for sure... They're not that costly so buy 'em and try 'em to see... If you have a dimmer they will last longer.
1391636
I have mine set that they are full on when motion is sensed. Than goes to full off. No dimming. Nor do I use the timer.
2023306
They come on instantly; unlike halogen bulbs. Just like halogens, you should burn them in for at least 30 minutes after installation. I have not done so in the past and it dims the maximum brightness of the bulb if you do not.
785075
Yes. They blink until fully charged then all four remain fully lit. The first time I charged mine, I thought something was wrong because it seemed to take a long time.
2096252
hello thomas, there is no delay for this led bulb. (instant on when power is switched on) also be advised these ecobright led bulbs are not designed for totally enclosed fixtures & are non dimmable. these bulbs are well built & are bright & a bit bigger around than some others. regards, neil
1277579
No light until the click. It is off or on; no in between. I do believe there is some variations in the actual light you receive. These are low end, but good value.
1205895
Hi Ted, The batteries don't seem to last very long. I have them on for at least four hours during my shows and I have to replace them every second to third show if I want the brightness, I do have then on full power. Hope this helps. Barbara
1398554
Very slight flicker when turning on -- not annoying at all. Instant on. However, they do flicker when it is time to change a bulb. I've had 20 in my family room ceiling since 1993. They are on constantly and I haven't had to change a bulb in over 15 months.
1057526
Not sure, I just put them on the windowsill and they are fully charged at night. BTW, I accidentally left one on and when I saw it in the morning, the LED was still emitting a faint light! Also, even the faintest light will charge these, they don't even need direct sunlight!
45825
I use these every night, on 500 lumen, for about 7 minutes. They last about 2 weeks on average. Same with other brands. The other settings will work a while longer but I need the bright light.
1855867
Lights stay on approximately one minute. They are not adjustable. I suggest you use only the best batteries for longer life.