Differences Between LED Lights H1 to H11
3 Answers
Here are the differences between LED lights H1 to H11: 1. H1: H1 is a single-filament, single-pin type, mostly used for high beams. 2. H3: H3 is a special type, generally used in Japanese cars and rarely in other vehicles. 3. H4: H4 is a dual-filament, three-pin bulb where both low and high beams are in one bulb, typically with 55W for low beam and 60W for high beam, or 90W for low beam and 100W for high beam. 4. H7: The most common configurations are 35W for both low and high beams, or 35W for high beam and 25W for low beam. Typically, H1 is used for high beam, H7 for low beam, and H7 for fog lights, or just a single H4 bulb. 5. H11: H11 is also a single-filament headlight, suitable for C2 fog lights.
The differences between bulb socket models H1 to H11 mainly lie in pin layout and application scenarios. H1 is an older design with a single pin and larger size, typically used in vintage cars or high-performance fog lights. H4 features a dual-pin structure supporting high/low beam switching, making it suitable for standard headlights. H7 also has a single pin but is more compact and modern, widely used for low or high beams. H9 offers higher power and intense brightness, specifically optimized for high beams. H11 is the most common choice for modern fog lights, featuring a unique pin design and excellent beam dispersion for foggy conditions. When upgrading to LED bulbs, always ensure they match your socket model to avoid installation issues or circuit incompatibility. Personally, I always check the manual before modifications to select the correct type and prevent wasted effort.
After driving for a long time, I've noticed that H1 bulbs are commonly found in fog lights of some older SUVs, while H4 bulbs are mostly used in headlights of compact cars, supporting dual-beam lighting. H7 is a standard choice for European cars, featuring a smaller socket and being suitable for low-beam systems. H9 bulbs deliver ultra-bright output but tend to generate more heat, making them excellent for high-beam performance. H11 is the most popular in the market, primarily designed for fog light applications with a wide beam that minimizes glare. Different car models have varying preferences—for instance, Japanese cars often favor H11 for fog lights, whereas American models might stick with the older H1 version. Before replacing bulbs, it's advisable to check your vehicle's manual or consult a mechanic. If upgrading to LED, choosing the same socket type ensures better durability and energy efficiency. Don’t overlook these small details in daily driving.
