We have received many inquiries regarding the various sizes of rechargeable batteries for solar lights. There are a few reasons why manufacturers choose one size over the other. They are as follows:
So, we will address each of these points above in further detail.
Item 1. A smaller battery will give the manufacturer the option to create a solar light that is smaller than what it would be had a larger rechargeable battery been used. Smaller batteries can store the same amount of energy capacity (mAh, or milliAmp hours) for each night’s use. For instance, a 600 mAh 1.2 Volt rechargeable battery can come in either a AA or AAA size. However, if you compare it to water flowing in a river, the AAA size is going to be a smaller river width, while AA batteries represent a larger river and thus more water can flow through. They will both flow for the same amount of time, only the AA will be able to provide more current (water, in our river example above) than its AAA counterpart over the same amount of time. The force of the water (ie: Voltage) is the same for both, only the AA will be able to provide more current and thus, a larger or demanding LED component (think, more current will allow for a brighter LED to be used). In the image above, two Lithium batteries with the same specifications are set side by side. However, the black battery is what is considered a 2/3 AA, while the grey battery is the more common AA size. The smaller battery will give the same output, but for a less powerful LED demand. The smaller battery is compact, but it is sufficient enough for a lower output illumination device (in this case, it was used in a solar spot light with 1 LED that was purchased from a big box store.) The advantage of the smaller battery is that it allows for a smaller solar light. The biggest disadvantage is that the replacements for these batteries are difficult to find, and when found, relatively expensive compared to their AA counterparts.
Item 2. The battery chemistry will play a factor in the design in a number of different ways. For one, the amount of electrical potential (Voltage) that a battery can provide will depend on the chemical makeup of the battery. AA Lithium ion batteries typically have a Voltage rating of 3.2 Volts; whereas the same size NiMH (Nickel Metal Hydride) or NiCd (Nickel Cadmium) will have a Voltage rating of 1.2 Volts. So, using a Lithium battery in a NiMH light will burn out the LEDs of the NiMH light almost instantly. The LED will be brighter than ever, but that moment in the spot light, so to speak, will end in a matter of seconds. So it is recommended to not use Lithium batteries in either NiMH or NiCd battery lights. Using a Lithium battery will give the manufacturer the option of increasing the LED load capacity (thus a brighter light), but will ultimately cost the customer more in the long run as replacement batteries for Lithium lights are more expensive.
Item 3. Since AA and AAA battery sizes are more common (AA moreso than AAA) than fractional sizes (such as the 2/3 AA in the photo above), costs for production have been set to allow for the best available pricing for customers worldwide. Being that AA batteries have been around since 1907, their production infrastructure has had plenty of time to develop and take hold on the battery market. There are square 9 Volt and larger Lead Acid rechargeable batteries on the market for use in solar lights. However, since they are odd shaped for the purpose of streamlining solar light designs, they are less commonly used and ultimately will cost more (also for the fact that they hold more energy) and are weighty.
Item 4. There are a number of chemical components that make up solar light rechargeable batteries. The primary distinguishing components are Nickel Cadmium (NiCd), Nickel Metal Hydride (NiMH), Lithium Ion and Lead Acid. Developed in 1899 by Swedish inventor Waldemar Jungner, it would take NiCd batteries over 4 decades to hit the market for commercial consumption. At the time, the competitor for NiCd batteries was the Lead Acid battery. However, due to the latter’s dimension restrictions as a small and portable battery, NiCd took hold and was widely used as a consumer-ready battery. Not until 1989 (with subsequent years of development) was the NiMH battery introduced to the market as an alternative to its Cadmium-based battery. NiMH rechargeables are capable of a better performance over the long term (for solar garden lights, typical lifespan of both chemistries is about 2 years). NiMH rechargeables also use a mild toxicity chemistry as opposed to the heavy metal toxicity of Cadmium (which makes up about 18% of the battery). NiMH batteries are capable (although it is recommended to recycle them whenever possible) of being thrown out in the trash. Whereas NiCd batteries must be recycled/disposed of in the proper facility. Lithium Ion batteries are taking their hold on the market due to their unsurpassed performance compared to other chemistries. But their setbacks are their disposal at the end of their lifecycle (recycling costs more than mining, so they may likely be thrown in the trash), higher cost of the battery for the consumer and transportation restrictions.
So, with all the considerations above, you will be better able to find the right solar light for your specific project. All of the battery chemistries have proven to have working track records, but each have their own pros and cons. Just be sure that the specifications you are looking for match what your solar lights came with when you first purchased them. If you are still not sure about the correct solar light batteries to use, check out our previous posts on the subject. There is much to know, but it is all worthwhile as solar lighting has great potential when it comes to illuminating your home, garden and office exteriors.
Should you have any questions or like to have us discuss other aspects of solar lighting around your home, send us an email at email@example.com. Be safe and stay solar!
Mario @ Your Solar Link
You’ve seen them. Maybe you didn’t know exactly what they were, but you’ve seen them. You’re driving along, listening to the latest Depeche Mode remix, and you notice that those street lights are different than what you remember from a decade ago. Yes, street lights are going LED (Light Emitting Diode). Some are going induction or halogen, but the point to make here is that they have been going away from that yellow HPS light that was prevalent a decade (or two) ago. However, as we have reached the middle of the second decade in the new millennium (yes, it’s 2015 already), technology has changed. And with it, we are going back to the white light at night to illuminate our streets, parking lots, and any other large exterior space.
Why go back to white light? First, it helps to give a true color to whatever is beneath the light (car, clothes, etc.) that helps with nighttime security (no more “they were driving a blue car, no green, no red….”; you get the picture). Second, it is closer to daylight color, so it is easier on the eye. And third, with LEDs, white light can be directed in a more controlled manner such that light pollution is greatly reduced as compared to their HPS predecessors. It is this third reason that interests cities and those who enjoy looking up to see the stars when outside of cities. As illustrated in the before and after images below, the lack of proper designs with HPS yellow lights created a haze of light pollution that spread beyond the ground they were intended to illuminate. The “after” picture shows how light on the ground is not compromised by switching to white LEDs, while the layers above the city are going back to dark, as it should. After all, we’re not trying to illuminate the air traffic above. Cheers.
So, the simple act of switching to LED fixtures for street lights is having a positive effect on security, near-natural light conditions and unwanted light pollution. Not only do we have these benefits, but LEDs outlast their predecessors by many years and use less energy to operate. Thus, the long-term costs of operation are greatly reduced and resources are preserved for future generations.
Now, it you want to take all that preservation, savings, efficiency and control of exterior lighting (cities, this is for you), then you can go off-grid with your street lights by cutting your ties to the utility company with the solar lights at SolTek Renewables. Their autonomous solar street lights include all the components to install a system that is comparable to (and often exceeds) industry standards while costing the user (and that would be you, the taxpayer) nothing in nightly operation. The only cost is that of a rechargeable battery (like the one in your car) replacement every 5 to 7 years (at today’s rate, that’s about $150 a battery). Not a bad deal for generating illumination that is controlled and owned by the city (again, that’s you taxpayers), doesn’t involve wars over oil, isn’t affected by black-outs or brown-outs, is free from utility company fees and their nasty increases, is as reliable (if not more so) than the conventional/grid-tied lights, and is a 100% renewable energy light.
To give you an example, a solar street light from SolTek Renewables costs anywhere between $4,500 (for your typical 1-fixture light you see along the streets) to about $6,500 for a dual-fixture light (that you see along the median of a multi-lane highway). Typical installation costs run around $2,000 a light (depending on your contractor). So, to install a light where there was not one before will run you about $6,500 to $8,500. Compare that to grid-tied lights that cost even more after installation (trenching, wiring, labor, etc. are not cheap, nor free) and have energy costs every single night they are on (and look around, they are on in the daylight as well. Not efficient at all.) Furthermore, you can have your solar street light up and running in a matter of 2 to 3 months. Compare that to the decades (yes, decades!) of planning, political rhetoric, etc. with conventional grid-tied lights. If there ever were a no-brainer, solar street lights are it!
Mario @ Your Solar Link
You may have seen the new light fixtures that are going up around town where the light is a very bright white light and it is all coming from a relatively small and low-profile fixture. Chances are that the fixture is one that uses LEDs as a light source. The advantage of LEDs are numerous:
1. LEDs produce very little heat compared to traditional lighting sources (incandescent, halogen, sodium and mercury vapor).
2. LEDs are a little more costly at first, but they quickly recuperate their costs with minimal energy usage over the long term.
3. LEDs are safer for the environment than induction lighting (that have about the same life-span) which require hazardous materials clean-up protocol due to the use of mercury in induction lamps.
4. LEDs come in a variety of color ranges (measured in Kelvin).
5. LEDs can be incorporated into a variety of housing styles and configurations.
As fixtures incorporate LEDs, their low-demand of energy allows them to be used in solar lighting applications. As energy demand is low, off-grid system autonomy increases with the use of highly-efficient rechargeable 12 Volt lead-acid batteries (very much the same as what is in your car) and smart controllers to regulate the amount of energy fixtures use each night. Typical autonomy runs for about 5 nights. That means that when the solar panels collect sunlight (about 2 to 4 hours) on day 1, then the LED fixture will continue to illuminate at night for the next 5 nights assuming that days 2 through 5 are completely cloud-covered or occluded.
Pathways and home use applications are also options for off-grid solar lighting. Large driveways or park pathways benefit with the use of the Lita, Lumina and Brighta series lights. As each light is a stand-alone and fully-contained unit, no wiring to trenching is required. So getting light to hard-to-reach places or where you may not have considered illuminating (think, the end of a boating dock or on a rocky surface) is achievable with the sustainable and 100% renewable energy lights from SolTek Renewables.
And let’s not forget lighting for smaller or design-specific applications such as signage lighting, interior lighting (within 40 feet of the solar panel) and event lighting. The SPG series allows for the solar panel, rechargeable battery (with integrated box) and smart controller (called an SPG) to be placed in areas where sun shines and a light fixture or fixtures can be placed away from the SPG unit. Spot, flood and bar lighting with a range of Wattages are available for each location. All fixtures again utilize LEDs to maximize the system autonomy while provided industry-standard white light.
Solar lighting from SolTek Renewables is here to stay and will bring the power of free energy to users and owners of their autonomous lights. No operating costs mean that money is immediately being saved and the environment is spared the damaging effects of dirty energy sources. Each light is a stand-alone unit that uses 100% renewable energy, guaranteed. Stay tuned for our next component (the solar panel) of the lights offered by SolTek Renewables.
Mario @ Your Solar Link
Check out new Halloween video from Your Solar Link.
For this Halloween project 3 solar spot lights were used along with 1 solar security light to showcase the giant spider.
Giant spider is made of chicken wire, plaster bandage strips pvc pipes and some spray paint. All the solar lights that were used for this project can be found at www.YourSolarLink.com.
What is the life span of solar lights?
Many times the question pops up regarding the life span of solar powered lights. How does one ensure the best performance and prolong the life of solar lights? After a while, you might notice that your solar lights are not as bright as when you first bought them. And without knowing the basics of solar lights, you may become confused about what exactly happened. Could it be that your solar lights got old and need to be recycled or is there something that you just need to know about the maintenance of your solar powered products?
Solar lights need four essential components to function:
1. A rechargeable battery to store the power generated by the energy from the sun.
2. A small photovoltaic cell or solar array that captures sunlight during the day and converts it into electrical energy. The solar array is usually built right into the light fixture. Some light designs have separate solar arrays connected by a thin wire allowing the light to be located in a shady area while the solar array itself is placed in a bright, sunny location.
3. A “charge controller” to ensure the batteries don’t get overcharged in bright sunlight as well as to monitor the amount of light in the surrounding area and turn the LED (light emitting diode) light on and off.
4. An LED (or a series of LEDs) which provides the light.
10-Pack NiCd AA700mAh 1.2V Rechargeable Batteries at http://www.yoursolarlink.com.
Image by Your Solar Link.
Rechargeable Solar Light Batteries are the major cause of failure in solar garden lights (5 main reasons why your solar lights are not performing as well as new.)
Rechargeable solar batteries will self-discharge which means that over time the batteries will discharge to a point where they no longer work.
It is important to ensure you charge your solar lights at least every three (3) months to ensure the battery stays in good shape and lasts its life span, generally 1-2 years.
Replace your old batteries when they run their life cycle.
When you purchase your solar lights, the rechargeable batteries are often already included in the fixture. After 1-2 years (or a matter of months in some cases) it is quite normal to see their performance decline. Once you notice that the lighting time is considerably diminishing and the lights are not as bright as before, it’s probably time to replace your rechargeable solar garden light batteries.
Another reason of reduced lighting time and brightness can also be that the solar light batteries are not charging correctly.
For the best charging performances the solar panel needs to be cleaned on a regular basis. Dust and other accumulated residues can considerably affect the charging procedure. They form a coating layer on the solar panel and block the sunlight.
10-Pack NiCd AA600mAh 1.2V Rechargeable Batteries at http://www.yoursolarlink.com.
Image by Your Solar Link.
An easy way to check if the rechargeable batteries are dead is to test them by briefly replacing them with regular batteries, just long enough to check if the light is working. If you are testing the solar light during the day, don’t forget to cover it, or place the light in a darkened room. This will allow the photocell to trigger the light to its “on” position. If the solar light turns on with normal batteries it means that the rechargeable batteries are faulty and you will need to buy a new set.
Important: don’t forget to pay particular attention to the location of the solar lights.
Batteries will not charge properly if the solar panel is in the shade, they rely on the energy of the sun to charge.
There is another simple test you can do before replacing the solar light rechargeable batteries. Place your solar lights under direct sunshine for a day or two and see what happens. If, after this duration, the illumination time is back to normal, it means that the solar panel was not getting enough light from the sun. Commonly, solar lights should be in direct sunlight for at least 4 hours a day to adequately charge the rechargeable batteries.
If you store your solar lights for long periods of time, take the batteries out!
When you had to store your garden solar lights for a long period of time (during winter months, for example), did you take out the batteries? If you did, your solar light batteries will have a longer life span.
10-Pack NiMH AA1000mAh 1.2V Rechargeable Batteries at http://www.yoursolarlink.com.
Image by Your Solar Link.
Replacing solar light batteries is not a difficult task.
All you have to do is to locate the solar light battery cover, remove it, take out the defective batteries and replace them with new ones. If no battery cover can be found, the solar light needs to be taken apart, usually with one or two screws. On most models you’ll find the screws on the top or bottom of the light. Once the unit is open you’ll have access to the batteries.
Types of rechargeable batteries.
Most solar garden lights need between 1 to 4 batteries to work. 2 types of batteries are usually used in garden solar lights: AA size – NiCad(Nickel Cadmium) 1.2 V / 500 to 900mA, and AA size – NiMH (Nickel Metal Hydride) 1.2 V /1000 to 2000mA.
When it is time to change the solar light rechargeable batteries, the choice of battery also plays an important part in ensuring the enhanced performance of your solar lights.
Nickel-metal hydride batteries (NiMH) will have up to three times more capacity than the same size Nickel-cadmium (NiCd) battery, meaning they are capable of lasting longer and more reliable.
NiMH batteries in your solar lights may cost a little extra but they are more environmentally friendly than NiCd batteries. NiMH batteries are more environmentally friendly because they use a dry liquid, which can be disposed of more easily. They will also withstand greater temperature fluctuations operating in temperatures ranging from -20 to 60 degrees Celsius (-4 to 140F). Ni-MH batteries have a “non-memory effect” which means they will continue to charge on cloudy days. The battery performance will not be diminished by these partial charges, as what can occur with lead acid batteries.
10-Pack NiMH AAA900mAh 1.2V Rechargeable Batteries at http://www.yoursolarlink.com.
Image by Your Solar Link.
Solar light replacement batteries are standard and can be found easily. If you know these solar lights basics, with minimum maintenance effort you will enjoy your solar powered lights for years.
Juicebar Pocket Solar Charger.
This stylish, sleek and reliable pocket size Universal Battery Charger (Juicebar Solar Charger) is proven to be your best friend in a situation when conventional electric supply is not available or if you are trying to use eco-friendly renewable power supplies.
Great as a solar phone charger for any type of Mobile Phones, IPhones, PSA, PDA, Mp3 Players, Satellite Navigation, and much more.
Get it HERE.
SOLAR PATH LIGHTS.
Stainless Steel Conical Solar Path Light (Set of 2).
Path solar lights are an excellent choice for lighting your garden paths, walkways, driveway perimeters and other regions in your landscape. They are often used in multiples to guide the way along a set of stairs or a dark walk.
Featured Stainless Steel Solar Light set uses 2 ultra-bright LEDs for maximum light output and minimum battery usage.
The lights are safe around kids and pets and water and corrosion resistant.
Read more HERE
STONE SOLAR SPOT LIGHTS.
Stone Solar Spot Lights (also known as Solar Rock Lights) completely camouflage with existing landscapes and look like any other rock in your garden.
SOLAR GARDEN FOUNTAINS.
How to start using ecologically friendly energy to power up your garden fountains and other garden water features?
Why not go with a solar powered water pump?
To accommodate your needs the Solar Fountain Pump Systems we carry range from 2 to 8 Watt. Browse our collection of solar water pumps for your fish ponds and solar fountains.
Enjoy your garden water features and your energy savings at the same time. Make a note of the various power levels and the flow rate of the solar water pumps before your purchase.
Please write us your review after your purchase. Your opinion is important to us!
DECORATIVE SOLAR ACCENT LIGHTS.
Solar accent lights (Set of 2) create an enjoyable and inviting glow for your landscape.
They are designed to mark a place.
Solar Spot Light - $26.99
Super High Output Spot Light (4 Super Bright LEDs). Free Shipping!
Solar spot lights like this one rely on energy from the sun to charge their batteries and provide light throughout the night.
This means that there is no need to tap into the electrical grid for these lights to operate.
The solar spot lights will work consistently, even if the whole neighborhood is dealing with a power outage.
Learn more about Solar Spot Lights at http://www.yoursolarlink.com/solar-spot-lights, where we have a great selection of solar spot lights to choose from.
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