GRV G4 COB 2508 AC12V/DC12-24V 3W Cabinet LED Silicone Light Crystal 30W Halogen Track Bulb Replacement Warm White Pack of 10

So far, so good!I used it on the outside of my camper, in the amber-lensed "front porch bug light".It is WAAAY brighter than the candescent bulb it replaced, yet pulls less wattage.We'll see now, how long it lasts. We don't camp every month, so I don't know if sittingwill hurt it.

I got these for use in some outdoor lighting fixtures and, in general, they work very well. They're very bright, with a pleasing color. My system is 12V DC, but the specs also say that they will work on 12V AC and DC voltages of up to 24 volts. The silicone encapsulation makes them water resistant and they should have a long operating life…the limiting factor is probably the silver cylindrical component that’s visible in the pictures. That’s an electrolytic capacitor and typically has a ten-year life…give or take five years. (Their actual life is highly dependent on manufacturing quality and operating environment. All bets are off if you live in Alaska or Phoenix.) On the other hand, these are inexpensive and easy to swap out should they prematurely die.The only downside of this bulb is its length. I have a couple of short fixtures where the bulb size would not allow them to be closed. Otherwise, I really like them…

Fits in the socket perfect, like an orginal, Bright, Silicone covered so it's easy to handle, I had used a lot of these and they are still lasting over several months. UNlike others You should try!

I have some desk lamps that take 12V halogen bulbs, and looked at using these as a replacement for the halogen ones. So far it works very well for this application. The light is bright enough for the lamp and my needs, giving off a warmer white. The leads were long enough for my use, but not too long, so I did not need to trim them.As with any application, be sure to check dimensions to make sure these will work for you.This is the first set of COB-style LED bulbs I've owned, and the fist bulbs I've ever seen encased in silicone. I suppose the silicone offers some advantages: provides support to the LED so it doesn't snap off, provides some measure of moisture-proofing, and also cushions the whole bulb. However, because silicone is flexible it's possible to stress the solder joints connecting the LED element to the circuit board--be careful. You can also see from one of the pictures that the LED element is not perfectly in the silicone.

So light is good but two different colors in the bulbs these are side by side and can see it so I don't like this but get past this and they have great light out put

Used in a couple of locations where I needed more light in the Motorhome

This review is for GRV G4 COB 2508 4W DC12~24V Cabinet LED Silicone Light Crystal 35W Halogen Replacement Warm White Pack of 6I was so excited to get these lights but didn’t last long. When I got them I wanted to try out one and see how it looks instead of replacing entire fixture I plugged it and turn on the light first second I saw smoke coming out before I was even able to reach back to the switch it got on fire and luckily my fuse box tripped and cut the electricity my 3-year-old son got scared so badly now he doesn’t play with the light switches any more that is the only good outcome from this product. I am scared to try the rest of the set so I am not taking any chance to burn my house and I am throwing the rest to the garbage.

Used one in my truck topper and the other under the hood and they work great .

These bulbs were too big to fit my lights. To be fair there are measurements down in the product details but it is difficult to see how big they are from the photos. They are not a replacement for standard G4 capsule halogen bulbs as they are much bigger. I have used identical looking LED cob led bulbs before that were smaller with no problems.Make sure you check the measurements of these bulbs before ordering to ensure they will fit your light fittings.

These are pretty good bulbs and not too bulky. They have a rubbery feel rather than solid plastic which made them a bit easier to grip and insert into my light fitting.Bright and clear, pleased with them.

dis the job, but make sure you have a led driver as a 12v halogen driver will not work, so not a direct replacement for halogen bulb

Good brite bulb worth the money and quick post

Die LED Birnen mit Sockel G4 sind gut verpackt im kleinen Karton im Briefkasten eingeworfen worden.Ich habe sie versuchsweise direkt neben den 20 Watt Halogen betrieben und man kann sagen sie sind vergleichbar in der Helligkeit. Nur die schmalen Seiten der LED selbst sind dunkler (also nicht ganz 360° rundum beleuchtet), aber das gleicht bei meiner Lampe das satinierte Glas ein wenig aus.Die mir gelieferten Exemplare dürften aber nicht so hell wie eine 35 Watt Halogen Birne sein.Ich habe sie einfach in den Sockel gesteckt, d.h. Plus und Minus dürften egal sein - Markierungen habe ich auch keine gefunden und sie sollen ja auch mit 12 und 24 V Wechselspannung funktionieren - das habe ich allerdings nicht ausprobiert.Die Angabe 4 Watt und 5 Watt Stromaufnahme je LED Birne (schon beim Angebot unterschiedliche Angaben...) kann ich nicht ganz messen:Das Strom-Messgerät zeigt mit einem LED Trafo und fünf Stück dieser LED Birnen zusammen 7,4 Watt an (Wenn man den Trafo-Verlust aussen vor lässt, kommt man damit auf knapp 1,5 Watt je LED Birne - selbst wenn mein Messgerät etwa 20 % zu wenig anzeigt, kommt nicht über 2 Watt).Nachdem sie somit sehr sparsam und trotzdem genauso hell sind, sowie eine vergleichbare Lichtfarbe haben wie meine bisherigen 20 Watt Halogen-Birnen, würde ich eine Empfehlung aussprechen.Schade nur, dass es gang und gäbe ist bei LED Leuchtmitteln 'Mondangaben' bzgl. Helligkeit und Stromaufnahme zu machen - auch diese hier machen da leider keine Ausnahme.