In my first year handling lighting orders for commercial interiors (back in 2017), I made a mistake that still makes me cringe. I was specifying power supplies for a high-end chandelier foyer project—a Fontaine chandelier, 18 pendant lights, each requiring a constant current driver. The client had a tight budget, and I thought I was being clever by choosing a generic AC/DC driver at half the price of a Mean Well LRS-series.

Two weeks after installation, the chandelier started flickering. Then three drivers failed within a month. The redo cost $1,800 in labor plus $600 in replacement parts—versus saving $120 upfront. That’s when I started documenting every mistake, creating a checklist, and becoming the “pitfall documenter” for our team.

So, when someone asks me “can you charge a solar panel with an LED light?” or “should I buy the cheapest 12V 10A power supply for my project?” I know the backstory. Let’s dive into the real problem behind power supply choices—and why the Mean Well LRS-150-24 became my go-to.

The Surface Problem: It Looks Cheaper

Everyone sees the price tag. A 12V 10A power supply from an unbranded source might cost $18. A Mean Well LRS-150-24 (which delivers 150W at 24V, about 6.25A at 24V, but often used in series for 12V applications) runs around $40–$50. The difference is obvious.

But here’s the thing: price is not cost. From the outside, it looks like you’re paying 2x for a brand name. The reality is you’re paying for reliability specs that prevent failures like the one I experienced.

The Deeper Cause: Hidden Failure Modes

People assume cheap power supplies work the same as good ones—just cheaper. That assumption is wrong in three critical ways:

1. Ripple & Noise

LED drivers need clean DC output. Cheap supplies often have high ripple (voltage fluctuations) that cause flickering, especially sensitive chandelier LEDs. The Mean Well LRS-150-24 has a ripple and noise spec of 120mVp-p max under load. The generic I used had over 400mV. The chandelier flickered because the LED modules couldn’t handle the spikes.

2. Temperature Drift

In a foyer with little ventilation, power supplies can hit 50°C ambient. Cheap units derate dramatically—sometimes losing 30% capacity above 40°C. The Mean Well LRS-150-24 is rated for full power up to 70°C with proper airflow. When the generic unit overheated, it shut down intermittently (note to self: always check derating curves).

3. Transient Protection

In chandelier foyers with dimmers and multiple loads, inrush current can spike. Mean Well includes protection against overvoltage, overcurrent, and short circuit. The generic one? It just fried. Twice.

The Real Cost of “Saving”

Let me break down the numbers from that first mistake:

  • Upfront savings: $120 on 18 drivers (saved $6.66 each)
  • Direct redo cost: $1,800 labor + $600 parts = $2,400
  • Indirect cost: Client trust lost, 3-week project delay, and I had to eat crow
  • Total wasted: $2,400 + $120 “savings” = actually $2,520 down the drain

And that’s just one project. Since then, I’ve caught 47 potential errors using my pre-order checklist. In 60% of comparisons, the lowest quote cost more in the long run (seriously).

A Bizarre Question That Reveals a Deeper Misunderstanding

You know the keyword “can you charge a solar panel with an LED light”? It sounds like a beginner question, but it reveals a fundamental confusion about energy conversion. People think: “Light produced by LED → solar panel receives light → charges battery.” The reality: the energy conversion efficiency is abysmal (maybe 2–5%), and the wavelength of most LEDs doesn’t match solar panel spectral sensitivity.

I bring this up because it mirrors the same fallacy in power supply choices: people assume “electricity in = electricity out” and ignore the real-world constraints. Choosing a power supply isn’t just about voltage and current—it’s about thermal management, regulation, protection features, and reliability over years of operation.

The Mean Well LRS-150-24: Why It’s Not Just About Price

After that chandelier disaster, I switched to Mean Well LRS-series for all my 24V lighting projects. Here’s what I learned the hard way:

  • 3-in-1 dimming capability (resistor/PWM/voltage) means you can integrate with almost any dimming system—saves scope changes mid-project.
  • Wide input range (90–264VAC) handles voltage fluctuations in commercial buildings without dropping out.
  • Active PFC reduces harmonic distortion, important for chandeliers with multiple drivers sharing a circuit.
  • 5-year warranty (actually 3 for standard, but they’re known for long life).

In my opinion (and I’ve tested dozens of suppliers), the Mean Well LRS-150-24 is the cheapest reliable option—not the cheapest upfront. That distinction matters.

So, What Should You Do?

If you’re specifying a power supply for a chandelier foyer—or any critical lighting project—don’t just compare prices. Ask yourself:

  • What’s the ripple spec?
  • Does the unit have proper protection circuits?
  • What’s the derating curve at expected ambient temperature?
  • Is it UL/CE listed for the region?

My checklist (painfully earned) includes those four questions plus an on-site heat test after installation. Since implementing it, we’ve had zero power supply failures in over 200 installed chandeliers. (Honestly, I should write that checklist up properly.)

As for the solar panel + LED question: no, you cannot effectively charge a solar panel with an LED light, but you can avoid costly mistakes by choosing the right power supply from the start. The Mean Well LRS-150-24 has been my safety net for three years now. It’s not the cheapest—but it’s the one that doesn’t cost me my reputation.

This advice was accurate as of early 2025. The power supply market changes, so always check current specs and pricing before ordering.