What are the specifications of car bulbs?

[EliasAnn]

Here are the specifications of car bulbs: 1. H1, single filament and single pin, mostly used for high beam. 2. H7, single filament and double pins, mostly used for low beam. 3. H3 is a special type, generally used in Japanese cars, rarely used in other cars. 4. H4 is a double filament and three-pin bulb, with both low and high beams in one bulb. The standard is 55W for low beam and 60W for high beam; or 90W for low beam and 100W for high beam. Motorcycles generally use H4, with both beams at 35W, or 35W for high beam and 25W for low beam. 5. For signal lights (brake and turn signals), there are BAY15d, BA15d, BA15s, B12.3d, B10d. Here is some related information: 1. Car bulbs are essential for ensuring driving safety and illuminating the road at night. They provide safety and comfort for you and your family during driving. Car bulbs are part of automotive accessories, and car product services focus on automotive accessories. 2. Before replacing car bulbs, gloves and protective goggles are needed. Use alcohol to wipe off fingerprints or grease on the outer surface of the lamp shell. Never touch the glass surface of the bulb with bare hands to prevent shortening the bulb's lifespan due to fingerprints contaminating the glass shell. After replacing the bulb, the headlights should be adjusted to avoid glare.

[VonAlexa]

Every time we talk about car bulbs, I get really excited. The main specifications of car bulbs revolve around three key points: voltage, wattage, and socket type. Voltage is typically 12 volts or 24 volts, depending on the vehicle model; wattage mostly ranges between 55 watts and 100 watts, affecting brightness levels; sockets come in common types like H4, H7, and H11, with different models corresponding to different lamp positions—for example, H7 is often used for low beams. I also enjoy paying attention to beam characteristics, such as color temperature ranging from 3000K to 6000K, which determines whether the light is warm yellow or cool white. When actually selecting bulbs, it's essential to refer to the original vehicle manual, as carelessly matching higher-wattage bulbs can easily damage the circuit. Lastly, it's worth mentioning that LED bulbs are now popular, with more complex specifications, including lumen values and such, making them worth learning more about.

[ElianaDella]

Last time I changed the bulb myself, I kept checking the specifications. The bulb packaging shows the wattage, like 50W or 60W, which indicates power consumption; the voltage is marked as 12V, meaning it's suitable for standard vehicle systems; and there's the socket type. The high beam on my car uses an H1 model, which plugs right in. If you accidentally buy the wrong model, the bulb might not fit or could flicker. I also noticed the lifespan parameter—low-quality bulbs are rated for 500 hours, while reputable brands can last over 2000 hours. After replacing it, I always test the brightness to ensure clear visibility at night. Experience tells me that checking the car manual beforehand saves trouble—don’t blindly trust store recommendations. Remember to check regularly, as old bulbs dim over time, affecting safe driving.

[DelKingston]

When I first started learning about cars, I knew nothing about bulb specifications, but later I gained some understanding. Simply put, the specifications include voltage—most cars use 12 volts, wattage—commonly around 55W, and the base—such as models like H7 or 9005. The voltage must match the vehicle's system, the wattage determines brightness, and different positions require different base types. When replacing bulbs, always choose the original specifications to avoid issues. Additionally, you can choose between warm or white light in terms of color temperature, but personally, I think sufficient brightness is enough. Don’t buy randomly—check the parameters carefully before purchasing.