Is a 12V or 24V LED Strip Better?

It is easy to get confused when choosing the right LED strip light, especially with all the different voltages available. The most common are 12V and 24V. Although they may appear identical at first glance, the difference can determine whether your lighting works perfectly or fails entirely, affecting performance, power, and the success of your project.

If you’re trying to decide whether you need a 12V or a 24V LED strip, you’ve come to the right place.

How Much Power Do LED Strips Need?

When an LED strip is labelled 12V or 24V, that indicates the DC voltage it requires to operate. Voltage is essentially the “pressure” that pushes electricity through the strip, powering the LEDs.

Since LED strips are independent of mains voltage, they require a power supply or driver to step down household voltage (220–240V in the UK) to the correct low-voltage current. Using the wrong voltage strip, driver, or combination can lead to product failure or damage.

Voltage isn’t just a number on the packaging. It affects how the strip responds to power.

12V LED Strips: Where They Work Best

12V LED strips are best suited for small, delicate projects. Here’s why:

 1. Cost-Effective and Affordable

12V strips are widely available and generally cheaper than 24V strips, making them a budget-friendly option.

2. Ideal for Vehicles and Portable Applications

Cars, yachts, caravans, and motor-driven domestic appliances usually run on 12V circuits. A 12V LED strip is therefore ideal for automotive lighting.

Considerations:

• They work best over short distances before voltage drop becomes an issue.

In short, 12V strips are perfect for detail work where flexibility and short runs are required.

24V LED Strips: Large Installations

24V LED strips are preferred for larger projects or setups that require continuous, reliable lighting.

Longer Run Without Voltage Drop

Higher voltage allows electricity to travel further along the strip, powering longer distances from a single point without losing brightness.

Improved Energy Efficiency

For applications like under-cabinet lighting in homes, offices, or stores, 24V strips reduce the number of drivers and simplify wiring, saving time and effort.

Professional-Grade Applications

Electricians and designers often use 24V strips for large installations because they provide a cleaner, smoother finish and more consistent lighting.

Considerations:

• Cutting intervals are larger than 12V strips, making them less suitable for small, precise projects.
• Initial costs may be slightly higher, but efficiency and performance make them cost-effective in the long run.

If you’re lighting a large space or running several long strips, 24V LED strips are worth the investment.

12V vs 24V LED Strips

Key Differences:

• Run length: 24V strips can go further before voltage drop occurs.
• Brightness consistency: 24V strips maintain even brightness; 12V strips may dim over long runs.
• Energy efficiency: 24V strips are more efficient for large projects.
• Cutting intervals: 12V strips can be cut more frequently, allowing precision placement.
• Cost: 12V strips are cheaper for small projects, while 24V strips save on wiring and drivers for larger projects.
• Best uses: 12V for vehicles; 24V for kitchens, offices, stores, or long-distance runs.

How to Choose Between 12V and 24V

Ask yourself these questions:

1. How large is the area to be lit?

Small areas → 12V; large areas → 24V.

2. Where is the power source located?

If the driver is far from the strip, 24V minimizes voltage drop.

3. Do you need precise cuts?

12V strips can be cut in smaller intervals, ideal for shelves or cabinets.

4. What is your budget?

12V strips are cheaper for small projects, and 24V strips save money on large projects over time.

5. Will you install it yourself?

DIY projects usually suit 12V strips; professionals tend to use 24V for large or commercial projects.

Mistakes to Avoid

Even with the right voltage, LED strip installations can go wrong. Common mistakes include:

• Mixing 12V and 24V components: A 12V strip won’t work with a 24V driver, and vice versa. Always check compatibility.
• Underpowering the strip: Using the wrong or insufficient driver can cause dimming or flickering.
• Ignoring voltage drop: Long runs of 12V strips without regulation can result in uneven brightness.

Avoid these issues to maximize lifespan and performance.

Expert Recommendations

• Small areas (shelves, closets, vehicles): 12V strips are sufficient.
• Large areas (living rooms, kitchens, offices, shops): 24V strips are ideal.

Rule of thumb: 12V for precision and short distances, 24V for energy efficiency and long distances.

If unsure, consult a lighting specialist to match voltage, brightness, and power supply for optimal results.

Conclusion

Which is better, 12V or 24V LED strips? It depends on your project.

• 12V: Flexible, budget-friendly, perfect for compact or detailed work.
• 24V: Efficient, bright, and ideal for large or long-distance installations.

The key is choosing a strip that matches your project’s size and requirements. Using the correct voltage prevents frustration and ensures your lighting looks as intended.

Explore BLT Direct's full range of 12V and 24V LED strips to find the perfect fit for your space.