How to Avoid Pitfalls When Buying Solar Street Lights in China?

Are you a purchaser? And do you want to buy the best solar street lights from China? This post must be your best choice.

You know today, China is the most prominent outdoor solar street lights manufacturing country in the world. And they’re good at making cheap products that you don’t want to refuse. But the more affordable the products, the more pitfalls.

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How to buy the best solar street lights?

To buy solar street lights, you should be discreet before purchasing. Especially in China, there must be nine pitfalls to avoid when sourcing.

LEDBLOC has specialized in the solar-powered street lights industry for eight years, and we are familiar with all the horror and shady of the industry.

We have specially compiled this blog to help you avoid losses. This blog will reveal the following to you:

And now, LEDBLOC sorts out the inside of the solar street lights industry without reservation.

I hope that our peers will never find this page!

Battery Pitfall or Solar Street Light

Exaggerate the actual capacity of the battery

You may quickly get a solar street light price list from a Chinese supplier with a suitable capacity parameter.

 What’s more, you were impressed by the lower price. After thinking twice, you feel it’s not bad. Nevertheless, you are going to be cheated now.

Note: Sincerely, there will be reduced battery capacity deliberately by many manufacturers. Because they must keep the so-called competitive price, there is a saying in China: Price is Everything. 

Thus, many solar lights manufacturers sacrifice quality and integrity to reduce costs. The best solar street lights for longevity must have high-quality batteries.

Exaggerate The Actual Capacity Of The Battery

The lithium iron phosphate (LiFePO4) battery

The lithium iron phosphate (LiFePO4) battery, also called LFP battery, specifically a lithium-ion battery, uses LiFePO4 as a cathode material and a graphitic carbon electrode with a metallic current collector grid as the anode.

The specific capacity of LiFePO4 is higher than that of the related Li(NiCoMn)O2 chemistry.

LiNixMnyCozO2 is also called NMC battery. It’s an industry term called ternary lithium battery.

LFP is finding several roles in-vehicle use, utility-scale stationary applications, backup power, and now in solar lights.

The Lithium Iron Phosphate (lifepo4) Battery

You can see that the cycle number is more than 1500 times.

The ternary lithium battery has about 500 cycle times which is the 1/3 lifetime of the LFP.

So you’ll ask your suppliers to use the LFP batteries for the production order for an extended period because the LFP battery is far better than the other lithium-ion battery.

Even some suppliers highly recommended the LPF. That is exceptionally standard logic.

Now, I’ll tell you a secret someone not known.

You know that there is a lot of electric vehicle on the road now. But what happens when the batteries reach the useful lifetime?

Electric Bus Lithium Battery 580v 600a

Of course, it is recycled by the recycling company.

How will recycling companies handle these batteries?

1st step, they will disassemble the batteries into a single battery.

2nd step, test and classify these batteries into A, B, C, and D levels.

3rd step, sell them.

Play Video

Of course, parts of these batteries will flow to the solar application, including solar street lights.

How to judge whether your supplier uses the cycling battery or not?

The price, just the price. They will give you a good parameter with the lower price. You may think that I have found a real manufacturer, a conscience manufacturer. Now you can think about it, the price of “B” level recycled batteries price is 1/4 of the new batteries.

The Inferior Battery

Many solar street lights suppliers will prove their battery capacity by showing pictures to you. But did you really get the truth through photos?

Maybe not. Let’s check the following cases.

The Inferior Battery

Sand-filled battery and burning battery!
What a terrible disaster. You must be careful when dealing with batteries.

Tips to buy best solar lights avoid this trap

  • Keeping clear-headed facing the price temptation (Price determines value).
  • Spending efforts to compare more solar lights suppliers, it’s never too bad to be careful.
  • Being more professional.
Good Quality Batteries

Solar Panel Pitfall of Solar Street LED Lights

Solar panels are in substandard power

Similar to the battery, if you wanna buy solar street LED lights, you should avoid the pitfalls of solar panels. Maybe you have known monocrystalline and polycrystalline silicon, even SunPower, so you won’t be cheated. 

But the panel size is another important stander to measure the power of a solar panel. 

The power is only proportional to the area of the board (length x width). So, remember to get the solar panel size from your solar lights suppliers.

Now, I offer a Relevant size for reference.

relevent table

We all know that lighting conditions can affect the charging efficiency of solar panels. 

Due to the geographical location of each country and region, the lighting conditions vary greatly. 

When choosing the same lamp power, you should choose the solar panel power suitable for your area. The same solar light, other areas can be used, could not be used in your country. 

This is what your supplier will not tell you. Because the solar street led lights supplier does not tailor it for you, what he can do is hide the facts.

Inferior solar panel

But for a inferior solar panel, the bigger the size, the greater the damage.

Inferior Solar Panel

Only two columns are workable on a whole solar panel, and the remaining parts are even without circuits.

There are many small workshops in China that produce products of poor quality. Be sure to learn how to distinguish.

The Black Solar Panel

The black solar panel, no color difference overall, high conversion efficiency.

Inferior Solar Panels Blurred Color

Inferior solar panels, blurred color, many spots, low efficiency.

The Panel Is Smooth

The panel is smooth.

Bubbles On The Surface.

Bubbles on the surface.

Counterfeit Sunpower Brand products

As we know, the Sunpower brand is full famous in the world, specializing in the solar field. Some unscrupulous manufacturers in China counterfeit the brand’s products and sell them in China.

Why SunPower?

Sunpower Solar Panel
  1. The conversion of SunPower solar panels is as high as 22%, and there is no grid line to ensure the stability and durability of power output.
  2. ISO9001, CE certification.
  3. Efficient PET and corrosion-resistant EVA provide effective protection for the panel, and EVA acts as a bond to achieve a sealing effect.
  4. The stable performance guarantees the output of power, which is higher than the 17% conversion efficiency of an ordinary single crystal, and the current can be 40-50% higher, which has a practical charging effect.
  5. The excellent low-light effect, the higher the conversion efficiency, and the better the low-lightness in the same single crystal.


Poor Quality Light Source, Without Waterproof

To buy powerful solar street lights, you have to be concerned about the light bulb. Because when it’s broken, the other parts will be useless.

To reduce costs, many solar power street lights manufacturers choose inferior low-efficiency light sources (without heat sink), and the inner wires are without waterproof measure.

Inferior Ling Source

Because the heat is not scattered, Severe light decay after a period of time.

And because of the water inside the light source, the light source will be completely broken.

Lamp at Begin

At Begin

Lamp After 3 Month

 After 3 Mths

Lamp After 1 Year

1 year later

Let’s check the quality light source and its crafts.

The housing shell under the circuit board was designed to enhance heat transfer and ensure perfect contact with the LED board and housing to maximize heat dissipation.

High Quality Lighting Source
  • The integrated optical lens improves the downward light output ratio to meet 5-7% higher efficiency than other competitors.
  • Adopted the Bridgelux light source and the high-transmission lens with the waterproof apron.
  • Full IP66 protection ensures the best lighting performance and reduces the maintenance cycles to save time and money.
Heat Sink
  • The maximum thermal power to be dissipated by the housing is around 50W. A surface area of > 0.14 m2 ensures enough heat dissipation.
Heat Sink 2

The fins are used to dissipate heat, improve the life of the light source, and reduce the light decay.

  • Adopted the Bridgelux light source and the high-transmission lens with the waterproof apron. Achieving the overall waterproof effect.
  • The fins are used to dissipate heat, improve the life of the light source, and reduce light decay.

The Copycat Controller, Problems All-Around

It has to say that the controller is the brain of the outdoor solar street lights. The best solar street lights must match a suitable high-quality controller. The main component of the controller is a circuit board sealed by waterproof glue.

You can not see with eyes. Some small workshops replicate the circuit board and make the same appearance with trustworthy brands.

Circuit board plagiarism is a mature industry in China, but its level varies. No company’s products are original. Even if it is not authentic, you can’t deny that it has excellent electronic engineers.

The solar controller manufacturers are mainly concentrated in Shenzhen, China. I want to recommend Srne and Depower for your reference. But there are also many small factories, which make copies only, and have no responsibility for quality.

Copycat Controller

Copycat version

Original version

Tips to Avoid Traps:

If you have higher product requirements, you can select Srne.

If your products are required cost-effective, you can select the Depower.

  •  Srne Brand Website:

  • Depower Brand Website:

Solar Street Light Pole & HardwareUsed Poor Material

Best solar street lights mean the best quality. You shouldn’t buy any cutting corners products. As shown in the picture below, cutting corners can cause many risks.

Cutting Corners

The solar street lights pole and the lamp’s hardware will also cut corners by the unscrupulous merchant.

In China’s manufacturing industry, there is a strange phenomenon: the price of raw materials has increased, but your product cannot increase the price.

The reason is many small factories are producing similar products. Some small manufacturers cannot engage in research and development, so they can only copy, imitate, and reduce prices. If there is no space for the price reduction, they are best at cutting corners.

At the same time, some large-scale and innovative manufacturers will increase their competitiveness by developing new molds or products.

The picture shown above is the product produced by small factories with small scale and no innovation ability.

Tips to Avoid Pitfalls:

Try to find out some large-scale and moderate-priced solar street lights manufacturers. If you are not sure about the supplier’s situation, you can provide specific parameters for them to produce according to the parameters.

I will provide a solar-powered street light pole technical Parameter form for your reference. These parameters are in line with industry technical standards.

solar lights pole

Power Management Mode is Turned On

As a solar street light, there are 2 working mode can be set.

Working mode 1: 

If you set the first 4 hours on full power and the next 4 hours on half power, the lamp is at full brightness in the first stage. In the next step, the light is at 50% brightness. 

Working mode 2:

If you set the sensing mode when people are near the lamp, the sensor will detect, and the light will turn to full brightness. And after the person is far away from the lamp for 30 seconds later, the lamp will reduce to 30% brightness.

When you experience it, you will find that intelligence makes energy-efficient being possible.

So, we say that the solar street light is a virtuous cycle product in the lighting field.

But something you need a warning.

Warning: Power Management Mode is Turned On

The solar street light supplier will promise you that the lamp will operate in bad weather for 3-5 days. Even 365 days of operation.

How is this achieved?

The solar street light manufacturers will turn on the power management mode, but they won’t tell you.

As the picture below, it provides power management mode 1 & mode 2 to select, this function is generally hidden, and you will never know the secret.

Remote Controller

What is the difference between turn on and turn off the power management mode?


Battery Power Drop



Another 3 Traps do not say

Now you know all the truth, don’t tell anyone .

Another 3 Traps

Another 3 Traps

Street Solar Lights Warranty Pitfall

Two years warranty, three years warranty, five years warranty, even ten years warranty, How was it come from?

Your street solar lights suppliers promise you, right?

But what is the specific meaning? No one can make it clear.

You will inevitably be confused. Is it that the more expensive the street solar lights product I bought, the longer the warranty period, and the cheaper, the shorter the warranty period? You can judge this way, but it is not entirely correct.

In China, there is slang, “Only buy the right and not expensive.”

What kind of product is suitable?

  • The product has been developed for many years, and the shape and structure are only slightly changed in design, rather than newly developed products that have just been put on the market.


Mature products represent that all technical problems have been solved and the market has recognized the products. That is more useful than various test reports for newly designed and developed products.

  • The supplier who provides you with a product must have meticulous logic and clear thinking on the product design.
  • Products with large shipments indicate no problem with product quality, and it is worth believing.

Mass Production and Pre-sample are inconsistent

You received a sample from the supplier, and after a series of tests, everything is perfect. And you took pictures of various details. You decide to place an order with them. Everything went well, and the cooperation was excellent. But finally, one day you started to push down prices to this supplier and put forward various demanding requirements, anyway, don’t want to cooperate anymore.

Why does it happen?
Another supplier has quoted an ultra-lower price for you.

And constantly whispering to you how bad the peer who quotes you a high price. So you can’t bear it and turn to them.

Then your WTF days begin, “Why are your goods and samples different?” “ Why is there a lamp that is not bright just three days after installation?” “f*ck here, f**k there….” You start living with endless complaints until, one day, this supplier ignores you.

And why does this happen too?Low prices hurt you, refuse low prices, choose the moderate price.

Fake certification

As long as you pay enough money in China, someone undoubtedly will do it for you.

We are with Chinese characteristics, so everything will have some Chinese features. Forged certificates are too standard for us. Except for UL TUV, everything else is easy.

And our intellectual property protection is fragile.
So you can understand this, China is a big assembly plant. If you need it will do for you.

Customers who require certification should avoid the pitfall.

How to avoid?

You can place some small orders. After everything is working well, you can put some big orders. Because none of us can meet the future, you can only look for suppliers carefully.

The longer you deposit in the industry, the richer your experience and the more industry resources you have accumulated. It also means that the more money you make in this industry.

Final Words

You have read this chapter. Maybe you often buy products in China. Some Chinese are diligent and cunning. This article can enhance some of your buying skills.

And you can read my other piece on solar street light prices to get more tips for your business.
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Judy Deng

Judy Deng

A blogger interested in solar and LED lighting. He studies how to make people's lives greener and more environmentally friendly. Also served as a faculty member for non-profit organizations.

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