CBconcept10XG412V20W G4 JC Halogen Light Bulb,20-Watt,12-Volt, 10 Bulbs

I used 60 of these to convert the old (dim & watt hungry) fixtures in my boat for LED efficiency. I tested out a number of brand's options before settling on these. I've very happy with the CBConcept versions because they are very high quality and come accurately in whatever color balance you need. (I tested the 6000K, 4000K, and 3000K). Between the difference color temperatures I probably ordered 90 of these bulbs and they all worked. No dead LEDs in any of them. The price per bulb is excellent for the quality you receive.They've been installed now for around 7 months of heavy use with no issues.Some slightly technical information about the project for those who care:Each dome fixture in my boat had two small incandescent bulbs individually switched. (This is a 12V DC system). With both bulbs on they drew a bit more than 2amps and put out around 300 lumens. For reference in terms people can relate to, a typical 100W household bulb puts out around 1600 lumens. In our saloon/galley we have 7 fixtures. So all lit up we would draw a fairly heavy 14 amps in the living space and it still could seem a bit dim (all 7 fixtures combined only put out about 1 and a third 100w bulbs worth of light for the entire space), while draining the house bank somewhat aggressively. We have AC lamps too but don't spend much time hooked up to the grid. We rely on solar.I gutted the old fixtures and rewired them with an ON-OFF-ON switch wired as LOW-OFF-HIGH. Low powers 2 of the CBConcept bulbs, high powers all 4. The rectangle LED bulb in the middle is a red unit, wired separately.Now, on HIGH, each fixture puts out 1280 lumens while drawing 2/3 of an amp, which I've verified with a handheld multimeter. So each dome (on HIGH) now draws about 1/3 of the previous amount while putting out 4 times as much light. Even on LOW the fixtures put out more than double the previous maximum lumens per fixture while drawing 1/3 of an amp instead of 2 amps.This change is significant enough that we are now in the process of removing all the AC light fixtures because they are completely unnecessary. In harbor if we had guests over, we used to hook up to the grid just so we could run the AC lights to prevent people from thinking we lived like trolls in a cave. Now the 12V system is more than adequate.In the main cabin this translates to almost six 100w bulbs worth of light output while now only drawing 4.2 amps.On Color Temperature:For those wondering about color temperature. I started the project thinking I would want the 4000K bulbs because I tend to light sharp/clear light. Surprisingly, 6000K in all the bulbs I tested cast what I felt was a very hazy light. I guess this makes sense, because blue light scatters more readily than red, but I was still shocked seeing the effect indoors. I actually thought my eyes were a bit hazy from being dry and that I needed to drink some water. The 4000K bulbs were very clear but, in addition to seeming very harsh in our interior, made all the wood look very oddly yellow. To clarify, there was nothing wrong with the color of the bulbs, it was just interaction with our interior that I didn't like. The 3000K were perfect, and (to me) much more white than the incandescent.All that is just to say that even if you think you know which color temperature you want, if you are doing a large project I recommend testing each color in the space before buying them all.

Very nice light and good value.

Problem: you have some LiPo battery pack (from radio-control plane/quadcopter/car...) that is damaged and puffed. That's a fire hazard.So you need to discharge it to 0 Volts, then it can go to the trash. (why there is no way to recycle Lithium is another problem)Get a bag of sand from the hardware store, stick the battery in it with only the wires coming out. put one light across the terminals (works great with XT-60, no need to build an adapter), let it plugged for a couple of days. All of that outdoor far from any structure, and not in a place that can get fires. Check what is ok... one could put that inside a grill as a safe place).disconnect, check the voltage, if zero, discard according to your local garbage rules.So the cost is minimal, and the result is good for that usage.

If these were available in 4500K I would give them 5 stars. The 4000K is slightly yellow compared to the 4500K tone. This is my second set. As the old, much more expensive LED's (4500K), fail I am replacing them with this product. Good value and long lasting. The use is for my RV ceiling lights, about 20 of them. This replacement bulb is now in 10 lights in the main room. Bright but a bit hard on the eyes for my taste. There is no other good, affordable LED I have found on the market. The next available color temperature in G4 base is 5000K or 6000K. Much too blue.

Bulbs work great but had to make a few adjustments. I have six under-counter halogen lights I wanted to replace with LED bulbs. I went from 60 watts total down to 6, but this caused other issues. We had a transformer that converted the AC voltage down to 12 volts for our bulbs, but the transformer required to pull around 35 watts, so while it worked for a few months, eventually both the transformer went out, as well as 2 of my LED bulbs. Additionally, the old transformer was not recommended to use with LED bulbs (something I was not aware of until my lights went out. I ordered a new transformer that was for LED lights and only rated at 10 watts (this gave me 4 watts to spare since all 6 bulbs only pulled 6 watts). That solved my problems after I replaced the two bad LED lights (one was charred so be careful of this issue) and a new transformer.I did contact the company that made the old transformer and they wanted to charge me $150 for an LED transformer. I wound up buying the CISNO Dc 12v 10w-200w Transformer Power Supply Driver Led Light for only $8.50 on Amazon. Great deal and so far works great.The only other thing I had to modify is that I snipped about an 8th of an inch off the ends of the contacts on these LED lights, lest they would not fit inside the under-counter light fixture I had. This was not an issue since the terminals are fairly long, but then they fit well in our existing light fixtures.Hope this helps someone else that is converting kitchen or living room under-counter lights. I also got the Warm Light LED bulbs. I tried the Pure White and while they worked well, they were just too bright for our kitchen. The warm lights make the kitchen much more comfortable, the way a kitchen should feel.

I installed this in my boat, they are nice and bright, quick install and my battery lasted longer after installing the LED bulbs.

De 5 focos, ya solo quedan 3. Primero falló al mes y el segundo a los 3 o 4 meses. Muy poco confiables3 semanas después ya solo me quedan 2 de los 5. No los recomiendo para nada

Works perfectly

Son mucho más pequeños de lo que esperaba, no tuve la oportunidad de probarlos ya que confundí el voltaje y fundí 3 en los intentos.

very good quality, a bit more expensive than other bulbs with no brand, but for the reliability and quality, worth it. and compared to Home Depot $5.95 each bulb, man you save a LOT