What Does IP65 Mean for Outdoor Solar Lights?

Quick Answer

IP65 means a solar light is completely protected from dust and can handle rain and splashes of water coming from any direction. So, if you're installing solar lights outdoors, they can handle heavy rain, dust, and even water from a garden hose. But there's one thing you should know. IP65 doesn't mean the light can stay underwater. For solar lights that are fully exposed to the weather, IP65 is a common minimum rating.

What Does IP65 Mean for Outdoor Solar Lights?

If you've ever looked at solar lights, you might have come across something called an IP65 rating written on it's box. But what does it actually mean?

Well, an IP65 rating tells you how well a solar light is protected from dust and water. This is especially important for outdoor solar lights because they're constantly exposed to changing weather conditions.

So, if you're planning to buy solar lights for your garden, driveway, or outdoor space, it's worth understanding what this rating actually tells you. Let's take a closer look at what IP65 means, how much rain it can handle, and which IP rating you should look for.

What Does IP65 Mean on a Solar Light?

IP65 means that a solar light is completely dust-proof and also protected from water coming from any direction. The letters IP stand for Ingress Protection, and this rating comes from an international standard called IEC 60529.

But what do the numbers 6 and 5 actually mean?

Well, the first number, which is 6, tells you how well the light is protected against dust. It's actually the highest dust protection rating, meaning no dust can get inside the light.

The second number, which is 5, tells you how well the light handles water. During testing, labs spray water onto the light from different directions using a 6.3 mm nozzle. This nozzle sprays around 12.5 litres of water per minute from about 3 metres away, and the test runs for at least 3 minutes.

Now, since solar lights stay outside 24/7, this level of protection is pretty important. But don't confuse water-resistant with completely waterproof, because IP65 doesn't mean your solar light can be submerged in water.

 Which Parts of a Solar Light Need to Stay Dry?

There are a few important parts in a solar light that needs to stay dry even though it has an IP65. Because these are the areas where water can sometimes find its way inside

• Housing: This is the outer body of the light that keeps the LED and other electrical parts protected from dust and water.

• Battery compartment: This is one area you should pay extra attention to. That's because you have to open it whenever you need to change the batteries, so the seal needs to close properly. So even a little moisture getting inside can cause the battery contacts to rust or corrode.

• Solar panel Water can also get inside through the edges of the solar panel, especially when the glue or seal starts wearing out over time.

Some solar lights also have a separate controller or junction box, so make sure these parts are properly protected from water too.

How Does IP65 Compare With IP44, IP66, and IP67?

You might have noticed that solar lights come with different IP ratings, such as IP44, IP65, IP66, and IP67. But what's the actual difference between them?

Well, all three ratings, IP65, IP66, and IP67, offer complete dust protection. The main difference is how much water they can handle.

Here's a simple comparison to help you understand.

But here's something interesting. IP66 uses a much larger 12.5 mm nozzle during testing, which delivers around 100 litres of water per minute.

Also, an IP67 rating doesn't automatically mean the light can handle powerful water jets. So, if you need protection against both water jets and temporary submersion, look for a dual rating such as IP65/IP67.

Can an IP65 Solar Light Stay Outside in Heavy Rain?

Yes, absolutely! IP65 solar lights are designed to handle heavy rain, wind-driven rain, and even water splashes from a garden hose.

But there's a limit to what they can handle. These lights aren't made to sit in standing water, flooded areas, or places where they're exposed to pressure washers.

And if you're planning to install spike lights or pathway lights in your garden, you should be a little more careful. Since these lights sit close to the ground, water and dirt can easily collect around them.

So, IP65 should be your minimum choice, but if you're installing lights in areas where water tends to collect, going with IP67 is a better option.

What Does an IP65 Rating Not Tell You?

Okay, so just because a solar light has an IP65 rating doesn't mean it'll stay protected forever. There's something else you should know. The rating is based on laboratory testing of a new light, so it doesn't tell you how well the seals will hold up after years of outdoor use.

Here are a few things you should keep in mind.

• Old or damaged seals Cheap rubber seals can dry out and crack when exposed to strong sunlight for long periods. Silicone seals generally last longer.

• Condensation The IP65 test checks protection against liquid water, not water vapour. This means moisture can still build up inside the light when temperatures change.

• Battery quality Even if your solar light is properly sealed, a poor-quality battery can still stop working much earlier than expected.

• False claims Some cheap solar lights advertise an IP65 rating without providing any proper testing reports to support it.
  

How Do You Check an IP65 Solar Light Before You Buy?

Before you spend money on an IP65 solar light, there are a few things you should check to make sure you're getting proper protection.

1. Check the IP rating Make sure the full IP65 rating is mentioned on the packaging or specification sheet. Just seeing the word "waterproof" isn't enough.

2. Ask for a test report If possible, ask the seller for a laboratory test report from recognised testing companies such as TÜV, Intertek, or SGS.

3. Check the battery door Look for screws and a thick rubber or silicone seal around the battery compartment to make sure it closes properly.

4. Check the other parts Ask whether the solar panel and controller have their own IP ratings.

5. Look at the warranty Before buying, make sure you understand the warranty and return policy in case something goes wrong.

And once you've installed your solar light, don't forget to check the seals at least once a year. Clean the area around the gasket whenever you change the batteries, and avoid using pressure washers or harsh cleaning products.

If you notice moisture inside the light, switch it off, open the battery compartment, and let it dry in the shade.

FAQs

Is IP65 waterproof?

Not completely. IP65 means the light is protected against dust and water jets from different directions, including rain and splashes. But it isn't designed to stay underwater. If you're installing lights in areas where flooding or submersion is possible, look for IP67 or higher.

Can IP65 solar lights stay outside in heavy rain?

Yes, they can! IP65 solar lights are tested against water sprayed from different angles, so they can handle heavy rain. However, they aren't designed for standing water or pressure washers.

Is IP65 enough for solar street lights?

Yes, IP65 is a common minimum rating for solar street lights that are fully exposed to the weather. But don't forget to check the battery compartment seals and solar panel edges too, as these are common places where water can get inside.

Should I choose IP65 or IP67 for solar garden lights?

Well, that depends on where you're installing them. If you're putting solar lights on open lawns, walls, or fences, IP65 should be fine. But if you're installing them in the ground or in areas where water tends to collect, IP67 is a better choice.

Conclusion

So, IP65 basically means your solar light is completely protected against dust and can handle rain and water splashes, making it a good choice for outdoor installation. But there's more to it than just the IP rating. You should also check the battery door, solar panel edges, and testing reports before buying. These small things can make a big difference in how well your solar light stays protected over time.