How to calculate the power of solar light?

Solar lights are becoming more and more popular these years, many traditional lighting customers are very keen to start solar light to expand their product line or switch regular led light business to solar light business urgently.  While most of the customers do not understand the parameters of solar lights at the beginning, finally customers spend a lot of money and effort on the wrong products. And lose their very important customers' trust because of the low-quality solar lights provided by their suppliers.

So, how to tell the parameters of solar light and decide this supplier is reliable or not to be your important partner? After all, the cost of solar light is always expensive, if any problem the loss will be huge.

The solar lights manufacturers are very various with the different abilities of manufacturing and development in China. Honestly speaking, 80% of solar manufacturers are not very professional in technical parameters, most of them are only caring about the prices that customers can accept, as long as there is a little profit then they can go for it. Also, most of them do not have research& development ability but simply buy the components from markets and assemble then deliver products to clients without test. Because of that, many customers are getting confused by their products and even are getting disappointed and not believe the solar lights easily.

How to tell the quality of solar lights then? Let's take the example of solar floodlight.

Here below are some we can see on market everywhere, and the name of the light is 50W 100W 200W even 300W etc.   So many customers are asking: Is it the real power of light? what  the hell does this power mean?

As we know the concept of solar light is to use a solar panel to generate electricity and conserve it into the battery pack, then battery drive led light to work.  So how can i know the power generated daily? And how about the power of light?

For example, we use 35W solar panel for our VENUS solar-led flood light. And we know the average solar radiation in France is about 3.5 hours per day (https://solargis.com/maps-and-gis-data/download/france). And we are using 10V for this panel, then ideally we can get 35W/10V*3.5H=12.25AH , the battery capacity is 6.4V 18AH which is equal to 6.4*18=115.2WH, but the power we can get from the solar panel is 6.4V*12.25 (78.4WH) which is less than the rated battery capacity. In order to extend the lifetime of battery, We use a much bigger battery in the system in order to have a better power backup when there are cloudy days.

From the above calculation, we know the power capacity of 35W solar panel is only 78.4WH, so if we need to this light to work full night, the total power consumption of led light should not exceed 78.4WH, if we programmed a reasonable lighting scheme whose lighting period is 6 hours, so based on the curve, we set the max power of light as 15W around which is the peak power when the battery is fully charged. So how come the other manufacturers are saying the power of their solar-led flood light is 200w or 300W. Actually, they call it 200W because the max power of LED chips is 200W, while actually, it does not mean anything for the end-users. What's more, because of the low-quality battery and solar panel, the real power of led light may be only 5W~10W only. Besides that,  it marks the lighting efficiency is 140lm/W, so does that mean the total luminous flux is up to 28000lm? Of course impossible.

While anyway, it is a reasonable phenomenon that both markets are there that some of which is looking for normal quality and some are looking for premium quality. Auroras is always trying its best to provide the most reliable and highest quality solar lights to customers with very technical support and service. Auroras is developing quality vertical solar led street lights, solar garden lights, solar bollard lights, etc as a great portfolio of solar lights to meet customersrequirements for different applications.  Auroras is your best choice for your solar lighting business.

The influence of plastic qualities on outdoor lamps.

Polycarbonate (plastic) is widely used in the solar lighting industry which is a very important material, It is always used as the optics or as the bracket or as the cover of solar lights. Most of the time, customers only care about the price difference instead of realizing the materials of different quality.  For example, HADES solar bollard light is 60usd, while some companies sell similar solar bollard light with 40% less even more.

So what is the reason for this big difference?

There are many manufacturers are trying to save costs by using low-quality materials, for example, using second-hand lithium batteries instead of using brand-new ones, using a smaller solar panel, and lower-quality LED chips,  thinner material in order to reduce the cost and make their products more competitive on prices. The prices of different quality plastics are very various. The cost of un-UV resistant plastic is about 40% less than the cost of UV resistant plastic. anyway, these differences will make different results finally.

 From the above picture, we can easily tell the un-UV resistant one is getting yellow and dirty which will affect the lighting performance a lot, and it will deliver a very low quality feeling for complete products, and finally affect your quality image & reputation in customers’ minds. While the UV-resistant bollard light looks like a brand new one even after exposure to sunlight for one year. It keeps neat and shining as the first day when it was installed For most clients, it is not easy to tell the quality of solar lights within a short time. Especially it will take half-year at least to tell the difference between the UV-resistant and un-UV resistant materials.It always takes a few years to build up a quality reputation in the market. Auroras has been dedicated to providing reliable quality products which customers can trust. The quality of auroras solar lighting products are easily reflected in the details. Auroras has been selling all products with "very high prices", because we use brand-new battery, high efficiency led chips and stable control system and providing premium after-sale service Auroras believe we could be a  reliable partner for your solar lighting business.  please visit our innovation at www.auroraslighting.com

Some view about vertical solar led street light

Some view about vertical solar led street light

Vertical solar led street light is a new solar lighting concept for street lighting. Because of its outstanding features, it is becoming more and more popular since 2019 especially in middle east countries where the regular solar panel is always affected by sand and dust in a short time. At present there are mainly three types of vertical solar PV poles on market,

The first one
is CIGS vertical solar PV represented by company "HEI" whose headquarter locates in Austria.  HEI is an esteemed company that started vertical solar pole a few years ago and their technology is based on CIGS solar cell. The cylindrical solar module produced by HEI has a very high finishing performance, while objectively speaking, there are some points that HEI may need to improve.

1 :  From the present datasheet of hei products, the power of their solar panel is kind of small which is not able to generate sufficient power to meet the power consumption of led light per night. because of this issue, solar light head only can work with low watts which is much lower than the datasheet shows in order to work for full nights to conserve energy to extend the lighting hours.

2 : HEI is using the technology of CIGS solar cell which is very soft and has great bent performance. while the main issue of CIGS is its efficiency is not so good as silicon solar cell. The initial efficiency of CIGS is more than 22% at the beginning while its efficiency will drop fast by more than 30% after 4~6 months. That means the power generated will much less after half a year and this will affect lighting performance greatly.

Generally speaking, HEI vertical solar PV is a great product with a lot of innovation, it will be good if HEI can keep improving on lighting efficiency per watts if not easy to extend the power of vertical PV. So it can create a better lighting performance for high-end solar lighting projects.

The second one is the linkable hexagon vertical solar module represented by "AURORAS INNOTECH" which is the only legal manufacturer in China. Such vertical solar module adopts the mutual technology of monocrystalline solar cell and aluminum profile. This vertical solar module was designed as "building blocks" which was intended to allow the module can be easily installed on any poles as long as the diameter of the pole is within 155mm no matter the pole is round shape or square or conical.This cylindrical solar module named "Solarwrap" contains two main modules which are connected to each other by MC4 plugs. And each vertical PV module has 2 pairs of MC4 cables one of which is for input and the other pair is for output. This allows customers to get higher power of vertical PV modules easily by linking them one by one.

Solarwrap vertical solar module is a patented product by auroras innotech in China.  Until now the quality & design of solarwrap is approved with great honor by many big clients after a long time test, Including signifyPHILIPS, LIGMAN, SCHREDER, etc.  There are a few companies that copy the design of Solarwrap in China, for example, Sun-free etc. Their production and promotion activity for vertical solar modules is an infringement without Auroras' authorization.

The third one is the conventional vertical design. To produce such pole, the manufacturer should attach the slim solar module to the steel pole when they produce it which means such a vertical pole is a complete unit.  It must be protected well enough from its production to delivery until the final installation. If the solar panel is damaged, it is very complicated to repair the system. In another word, it is very hard to maintain, so suppliers should spend a lot of attention on its package, then customers will be happy.

Finally, vertical solar led street light is a new concept of solar lighting, it is developed for high-end projects, It is very important to choose a reliable manufacturer as your partner.

Differents of 3 types of solar led street light system

1:ALL IN ONE solar led street light.
Such solar street light is very popular on market, and you can see many powers from 5w to 90w even 100w. It is called all in one because solar panel,lithium batttery and controller as well as led chips are integrated together. The biggest advtanage of such type is its simple installtion which does not require professional technician to install.but there are a few disadvanges you have to know.we have explained it very clear and you can read this from our website from here.http://auroraslighting.com/Blog/detail/advantage_disadvantage_of_all_in_one_led_street_light.html

2:SPLIT TYPE solar led street light

3: Semi-split solar led street light

Such light is an combination of all new technology.It has the advantages of ALL IN ONE type and it avoids the disadvantages of split type. Lithium battery and solar controller built inside of the light fixture as well as led chip. only solar panel are seperated which allow customer to use different powers as project require. There are only two parts of such light, only solar light head + solar panel which are connected by universal MC4 plugs. Anyone can do this connection easily without any mistake. in some regions, there are  many problem that battery are always stolen when put in groud. Because such the lithium battery are inside of light head,so it is very safe and nobody can steal it.  This is a very big concern in some regions when customers consider about their project.

As we know your company is working on serious goverment project. so we believe all in one solar street light is not a good option for your project. split type is a reasonable option if you have good technicians. while there are so many different modles and competitors and quality of such type are very various.In my opinion this type will be out of date gradually.and all the light will be semi split. because it is very easy to install and have good performance in lighting.

Our company has been focusing on high quality solar products which are for commercial. We have supplying thousands full set of solar street lighting for UN in past years. For commercial solar lighting, it must has a big battery which can make light work 100% for 12 hours at least. Only with this specification, the light can work well even in winter or cloudy days. There are many low price products even some companies declare "high data" in their data sheet. so i really hope you will be able to tell which is real and which is not.

Now We have developed full range of Semi Split type which covers different powers from 20W to 150W.  Our latest model is THOR, it is specially for high way. and it has a very big battey capacity which can allow light to work 24 hours with 100%.  We can make the design for your project if you like.

What is cylindrical led solar led street light

What is the cylinder solar led street light?

At present, regular flat solar panel are adopted for all kind of solar led street lights on market, it has a good power and can meet most of projects' requirements.   But in some cases, regular solar panel is not a good option, for example.

When  led power is 80W or more, solar panel will need 200W, but size of 200W solar panel is huge size, the installation performance is very ugly.

In windy areas or countries, regular solar panel with big size is too easy to be blown off or damaged, It could be worse especially when typhoon or other very bad weathers.

In order to solve these problems, Auroras team spent months time and finally worked out cylinder solar led street light which is completed different from the exisiting solution on market. We are honored to introduce the world's first real modular cylindrical solar led street light solution! What are the advantages of this cylindrical solar street light? Actually there are many outstanding advantages  as below:

01. 360 Degree Full Day Charging.
The hexagonal design ensures maximum exposure in the morning and afternoon, greatly increasing the amount of electricity generated.

02. Modular Design. Unlimited Power
Available in C60W (60cm 60W) and C100W (100cm 100W), total power can be increased or decreased as required. Each modular is 18V, Many modules can be connected in parallel to get higher power.

03. Strong Wind Resistance
The force surface is reduced by more than 60% compared with the traditional solar panel. Each module and the pole are fixed by 12 screws, which can resist the 12-level typhoon.

04. Simple Wiring Connection
It can be mounted on any shaped poles as long as the diameter is less than 16cm, either cylindrical or polygonal.  The installation is flexible, robust and fast.

05. No Snow Accumulation
Since the solar panels are installed vertically, the snow does not accumulate on the snow when it is snowing, ensuring that the lithium battery can be charged normally during the bad weather.

06. Easy to clearn, No need lift truck.
People can clear the cylinder solar led street light with standing on ground,  Faster and easier than using lift trunk. Higher working efficiency

07. Higher Charging Efficiency
Monocrystalline silicon cells are adopted , power generating efficiency is up to 21.8% which is much higher than using thin film flexible solar panel.

09. Flexibility of Installation
It can be easily mounted on any different poles such as conical, cylindrical, polygonal, etc.( Diameter should be within 165mm).  You can buy cylindrical solar modular separately and use them on existing poles. We can also provide solar panels, poles and solar lamps etc as a complete system.

08. High Class Out looking

With a slim solar tube on the pole, it has much better looking than using traditional solar panel. This design blends street lights with city very well and makes city more beautiful.

(Cylinder) Cylindrical solar street light is an great innovation in 2019, 6 slim solar panels are fixed on a hexagonal cylinder aluminum frame.  It has a much stronger performance in wind resistant. and it makes the complete solar pole more beautiful than regular solar panel. Auroras's cylinder solar panel is a modular panel which can meet different power as requested.

Integrated all in one solar street light has become as an important role of outdoor lighting. It is getting more and more popular recent years. While Is it suitable for all demand and have good performance in all over the regions? which kind of solar light should you use? That is a good question!

Advantage of All In One Solar LED Street Light

The main reason why it gets more popular is for its compact design. The lithium battery and solar controller are built inside of light fixture, and solar panel are attached on the top of fixture. It is very easy to be installed at any places as long as there is sunshine. Can be installed on wall, kind of poles, or any other matersial which can be mounted. It is an very good choice to use this solar light to light up night for the places where is out or short of electricity. Normally there is a motion sensor which is in order to save power consumption: Light will work at 30% power when there is nobody and sensor is not triggered, and it will power up to 100% power which will last 20 ~60 seconds as program sets once sensor is triggered when someone passes by. AIO (All in one solar) street light is very suitable to be used for these countries or regions where there is plenty of sunshine all over the year, like most of middle east countries, South America, South Africa and some Asia countries.

Disadvantage of All In One Solar LED Street Light

A coin has two sides. There are some disadvantages because of the compact all in one design.

A: POWER LIMITATION OF SOLAR PANEL

The solar panel is locked tightly in the light fixture. so it cannot be modified easily to have a higher power in order to improve its lighiting performance. At moment on market, the solar panel is kind of too small comparing with its LED light power. For example, the LED power is 30W as rated power while the solar panel is only 40W or 45W. As we know the effective sunshine duration is only 5 hours around on average on the world. That will cause the problem that  there is not enough power generated from solar panel to support led light to work with high power output for long time continuesly.Because of this reason, It is necessary to use the motion sensor for all models of such all in one solar street light in order to save energy.

(How to calculate the the power relation between solar panel and led light? check here.)

B: DIRECTION/ANGLE LIMITATION

Because of all in one design, the solar light is completely fixed on the top of light. it cannot be adjusted its angle or direction, That will cause two problems as below.

1: Solar panel of all in one model cannot be rotated to meet the best direction to make use of sunshine as efficient as possible. From the comparing picture as below, we can see there is NO any problem if we use HELIOS model, HELIOS's solar panel can  be adjusted very easily and freely.

 All in One Solar LED Street Light All in TWO Solar LED Street Light

2Solar panel of all in one solar street light can not be adjusted in .As we know, the solar panel horizontal direction should be different based on different latitude, normally it is 0 degress to 45 degress, With proper angle to sun, it will get the max using  efficiency of solar panel, from below pictures show, solar panel of all in one type is not able to be adjusted as the flexibility of Helios all in two solar street light.

Comparing on different  latitude

 All in One Solar LED Street Light All in TWO Solar LED Street Light

We can tell from above comparation,  all in one solar street light is not an ideal even we can call "bad" choice if use it in such short-sunshine regions like England , Canada, Russia,etc.  All in one solar street light is an good products for general application, but it also  has many limitation. So we suggest that clients can choose the right solar street light accordingly. Auroras are producing rich models of solar light that you can choose from to meet all kind of outdoor solar lighting. Welcome to contact us

What is solar led batten light kit?

Solar led batten light is the pioneer model comparing with the normal solar powered tube light, widely used in many applications, such as office, home, garage, caravan, carports, bus stations, warehouses, camping tents, kinds of shelves,  farm tents, sideways, emergency camps, aid tents, temporary or permanent caves, or any kinds of sheds of paths, etc.

Solar led batten light is a kit that contains everything, like rechargeable lithium battery, solar controller, solar panel. Easy installation in less than 15 minutes, you just need to plug solar panel into the light by DC connector.  It provides a high brighttness for long time continuous lighting output, and inbuilt PIR sensor can save power if sunshine is not strong enough. This solar led batten light is also supported  to work during day time while being charged, under manual operation. By programming the remote control, you can increase or decrease the brightness as you like,  there are 2 hours, 4 hours and 6 hours for optional.  Pressing the button on light, you will find  out 3 lighting modes , brightness and time can be set easily by remote control.

One 5V USB output was added to charge your mobile, What's more , an external switch is allowed to be connected to this light via a DC port.  The ON / OFF and brightness can be operated by hand just like the traditional lights. This is a very useful advantage for the applications which need to do the lighting operation by hand instead of automatic.  It is a perfect lighting solution for the remote area where is lack of power and lighting.

What is the core factor for solar led street light?

From recent years, solar led street light is becoming more and more important and its demand has been increased a lot.  There are more and more factories who start to product solar street light, There are various models of solar lights with different specification, and main problem is there is not a very clear standard of quality or specification to refer to.

So, how to compare the quality of different solar street lights and choose the right one for your project? What is the biggest concern that you need to focus when you compare?  Our answer is light efficiency.

Comparison of All in One and All in Two Solar LED Street Light

A: 50W Solar LED Street Light

LED Quantity: 60Pcs  Battery 600WH   Solar Panel: 80W

B: 100W Solar LED Street Light

LED Quantity: 240Pcs  Battery 900WH   Solar Panel: 150W

Such two solar lights are both called “500W” while the efficiency is much different, All in one solar led street light is only working in 50% power actually, and its efficiency is about 3000lm~4000lm in energy saving mode. But B type with 240pcs led, our model can work well with 100% power and lumens is 8000lm. It is more than doubled than normal all in one solar led street light.

Auroras’s quality policy is to provide high lumens solar products for commercial lighting project, our latest model THOR are able to reach 160lm/w practically, 50W of THOR is able to provide 8000lm, that means THOR 50W is equal to normal 90W-100W models of normal solar led street light, This makes our solar light offer is very competitive than offering a higher power consumption solar light. Lower power , it means request smaller size battery and smaller size solar panel,  so it reduce cost of whole project greatly. It will be much easier for end customer to accept an offer like this.  Because the budget is there all the time

So when you select the solar lights for project application, lumens efficiency per watt is the most important concern , not the power led LED. We provides solar led street light from 2000lm to 18000lm as full range of solar lighting powers as optional.

We will reply to you within 24 hours once we get  your inquiry.

Why we say there are some the fake data of solar light?

As a manufacturer of solar light, sometime we are really speechless when some customer ask many questions like below：

1. Why your 30W only has 4200lm , but other supplier they can offer 30w with 5000lm!
2: Why your solar led batten light is so expensive?
3: Why your all in one solar street light is much expensive than another supplier?

Many many customers asked such questions, especially some customers are very new to solar lights, As we know the competition of convential AC solar light is very bad, and very less profit for most of customers.  Auroras is able to provide you good quality of solar led flood light, solar led street light and solar led batten light. So now we can see there are more and more customers start to engage into solar light.As far as we know. in our opinion, solar light is a very "deep" water products. before you start to try solar light, we suggest you should learn about these basic acknowleage about solar. and should know how to tell the quality and the specification from the supplier's data sheet. Until now, we have met many catalog or quotations sheet with very " amazing "data sheet which is very hard for us to believe.

For example, The data sheet for below solar light is

--Solar Panel: 20W 18V
--Battery: 15AH
--led power: 20W
--Luminous Flux: 3000lm
--Automony:2~3 days

but our all in two solar led light, 30W we have 30AH 12V battery ,and 80W solar led panel. What is your idea when you see this data? from what it says, this light is very nice, and the price is also good, and you then maybe go to calculate the project quantity or expected their light performance as they say...When you receive the light, and you install there, the lumens you will say: wow, it is great, then you feel satisfied.. We must confess this is workable for some customers, especially for pravate customers who only expect it as a " decoration". Let's study above data in a professional way. About the battery. it does not mention the voltage. it maybe 3.7V 15A or 11.1V 15A. , btweeen these two data there are big difference. 3.7V 15A battery, it means the battery capacity is only 3.7*15=55.5WH, the power of this light is 20W, that means the light will only work 55.5WH/20W = 2.5 Hours with 100% power output.. so this light will work only in energy saving mode. it is 30% power only,means normally the power led light is only 5W or 6W only.So you may ask: What about lumens 3000lm? Their answer is: when the light is working with 100%, the lumens can reach 3000lm. Yes, they are right, but they will not tell you , such power only last 20 seconds, or 1 mins max!. and even you should accept the real answer is: 3000lm is only the max lumens of LED chip. CHIP, not complete light. There is big difference.  That means the real lumens output will be only 2500lm around in a positive calculation.

Just now we talked about the battery, 3.7V, of course, they may use 6.4V 15AH, it should work well. But as a customer, you should know what you pay for. you are paying for A Audi Q5 or a cheap model. So it is very important to choose a good supplier to make solar led street light or  all in one solar led batten light for you in a good and professional way.

Thanks for your time to read this, i need to rush for dinner.?
Please let me know if you have any suggestion or advice or dispute.. welcome.

How to calculate the power concumption of solar light?

There are many types of solar light on market like solar street light, all in one solar led batten light, or solar flood light.It is same way to calculate the power. While most of clients do not know how to judge whether the battery is matching with the lighting power consumption or not, then only can rely on the answer from salesman of suppliers. What's more, there is many salesman who answer clients' answer too facilely just in order to sell their products to client asap which causes a lot of compliant finally.

For example. for same power 30W solar led street light, why does some solar street light have battery 20AH, but why other all in one solar street light have 16AH? what makes the difference? which one suits your requests more?  Let's learn it today.

First quetions is:

How can i know the power consumption of your solar led batten light?  or solar led flood light per night?

Let's take Helios all in two 30W solar led street light as example. So you will know how to decide it.

As the default setting, HELIOS 30W is working with 100% power for first 6 hours and 50% power for next 6 hours without sensor. Then theoretically the power consumption per night is :

30W*6H +30W*50%*6H = 270WH,

and we need to include the power consumption of system, it is about 5% around. so we can get the total consumption roughly is 270WH*(1+5%)=283.5WH.

That means only the power of battery capacity is more than 283.5WH, the light will work as the default setting, or the light will stop working earlier. How to choose and calculate the right battery capacity? Based on above calculation, the power consumption is 283.5WH, normally the system for 30W is 12V for the battery. So the battery capacity should be:

283.5/12=23.63AH.

As we know the D.O.D (Depth of Discharge) of lead acid battery is 60-70% , so if this all in two solar led street light is using lead acid battery, the capacity should be: 12V  40AH (24/0.6=40). If lithium battery with D.O.D 100%, the battery capacity should be 12V 24AH. Normally Auroras always put more capacity as backup in order to extend lifetime of battery.  So when the power is 30W, Auroras is using 36AH battery. In above example, if the lighting mode is 50% power for 12 hours with sensor function, the power consumption will be much less.  As long as we know how to calculate it, we will know whether the specification is reasonable or not. So we need to choose the right battery capacity based on light consumption. No need to rely on supplier's description.

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Conctact : Wayne Tseng

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Email: sales@auroraslighting.com

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