Best Outdoor Solar Lights Top 10 and Our Pick

Things to Consider When Looking for the Best Outdoor Solar Lights Outdoor solar lights are a very cost effective and eco-friendly way to brighten up your garden or walkway. They have numerous advantages, like no running costs and low maintenance, but they also have some disadvantages as well. Some lights will be more of a hassle than a convenience. Before investing your money and time in a specific solar light, consider these factors to ensure that it is the right light for you. A major advantage of using outdoor solar lights is that they cost nothing to operate. This is the same for absolutely every solar light you may find. However, certain solar lights will be more expensive than others. Be careful when choosing a product that you are not spending more money on a product that will give you the exact same as a cheaper brand. When looking to buy your best outdoor solar lights, the reason behind the buy is extremely important. Of the three main types of lights available to you, each is made for a specific purpose. They are either for ambient lighting, small area lighting, or spot area lighting. If you want them for security landscape lighting, you do not want to buy ambient lights. Just like if you want path lights, you do not want to buy extremely bright floodlights. You need to consider the application of these lights. You would think that would not need to be said, but some people completely overlook that aspect. Depending on the type of outdoor solar light you buy, the installation will be different. Most, if not all, of the path light variants will just be a simple light on a stake that you need to shove in the ground. The security lights, on the other hand, will require a bit more complex installation. Of course, each type of solar light will have its own different installation process, so just be mindful of them. Some may be simpler than others. Also, some lights will have more powerful sensors than others. Meaning they will be able to absorb more sunlight under certain circumstances. Most solar lights will need to be installed in an area that allows adequate sunlight availability to function properly. So be sure you have open spaces for these lights. Most high-quality solar lights will not need a lot of maintenance. In fact, LED solar bulbs have a lifespan of up to 20,000 hours. The biggest thing to take into consideration is the rechargeable battery life. Some solar lights will have a bigger capacity battery than others. This means that you will not have to change the battery as often. However, this is a small inconvenience. The only other maintenance required for any solar light is a periodical wiping of the cell to get rid of any dust or dirt. Some of the best outdoor solar lights even have a self-cleaning cell. By far, the biggest complaint among many people using solar lights is the brightness. Because they do not have the constant stream of power that the hardwired lights have, they tend to emit lower levels of light. However, you can find solar lights that have very bright bulbs. The brightness issue will not really be of importance when buying ambient or pathway lights as you will probably want them to be lower anyway. The issue is of more importance when looking for security or spotlights, as they are meant to be very bright.

1. Automatic Solar light far too dim, help with increasing brightness

R2 sets the current through the LEDs. It must soak up the voltage difference between the supply and the LEDs. A typical 5mm super-bright white LED drops about 3.3V at 20mA. A 3.6V AA NiMH battery should deliver between 4. 2V and 3. 3V depending on state of charge, with an average of about 3.8V. The transistor will drop about 0.1V in saturation, leaving 0.4V across R2. With 3 LEDs consuming 20mA each the total current is 60mA, so the resistance required is 0.4V/0.06A = 6.7 Ohms (a 6.8 resistor will be close enough). If you want a lower LED current then insert that into the formula. If the LEDs are not well matched you may find that they do not draw equal current in parallel. This issue can be avoided by splitting R2 into 3 resistors which feed each LED separately. The value of each resistor must then be 3 times higher than the total, eg. 20 (use the nearest 5% value, 18 or 22).R1 sets the Base current of Q1. It should supply sufficient current to saturate the transistor, so that it can switch full battery voltage to the output at the required current. Collector current is amplified by the 2N3906's current gain (Beta or Hfe) which in normal operation is between 60 and 300. However in saturation the current gain is reduced, so a lower Collector/Base current ratio may be required (eg. 20:1). The value of R1 can be calculated in the same manner as for R2 (determine voltage across resistor, apply Ohm's Law). However that reveals a problem with your circuit. A 6V solar panel usually has 12 cells in series, supplying 0.5V each. In the dark each cell acts like a silicon diode, so the panel is effectively 12 diodes in series. When powered externally the diode action will drop 0. 5V per cell, for a total of 6V. This is higher than the NiMH battery voltage, but your circuit needs a lower voltage (preferably zero Volts) to turn on the transistor. It only works due to leakage current in the solar panel, which is not defined and drops to zero as the panel voltage approaches zero. If you try to increase Q1's Base current by reducing the value of R1 then you may be limited by the panel's dark current. To guarantee sufficient Base current you can wire a resistor across the panel. The combined value of this resistor (let's call it R3) and R1 then sets Q1's Base current. Assuming 3.8V from the battery, 0.6V across Q1 Emitter-Base, and 60mA/20 = 3mA Base current, R1R3 = (3. 8V-0. 6V)/3mA = 1067. Splitting that value into equal resistances gives 534 per resistor (470 will be close enough). R3 will waste about 12mA of potential charging current, but this should not be significant.In bright sunlight the panel can deliver up to 330mA charging current. This may be slightly above the recommended trickle current for AA cells (eg. 200mA for a 2000mAh cell) however this high current is unlikely to cause damage as it will only occur for an hour or so in the middle of the day

2. solar light wiring leds together?

It depends on the real situation

3. How can I tell if my solar light is working?

Well in the daylight put them out by the sun so they can charge natural by the sun's light energy and when the sun is gone put them in the ground and they will light up

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My guess is not very often.Leaving an unused device “on” when leaving a room does not strike one as much as leaving water taps open.And so we waste a lot of energy and money, while a bit of care and attention could change a lot.I was convinced that at WWF we also need to do more about our energy impact, and walk the talk, and wanted to ignite this change.I worked over 10 years on energy policy for WWF, but I wanted some practice. Thanks to an MSc in Wales at CAT and solar work experience at Hassler Energia I acquired more hands-on, practical knowledge needed for this new challenge.Now I am looking for ways to make our offices more energy efficient, and to switch our energy supply to solar.Fifteen WWF offices across the world are already running on solar energy and I’ve seen the energy consumption drop drastically in all offices where we trained staff and made some technical changes, like replacing inefficient air conditioners. It works!But I couldn’t have done this without my colleagues.While they are concerned with other environmental issues in their day to day work, they are still enthusiastic to learn more about their impact and reduce their energy consumption.Switch off the plug — switch on the sun: Energy policy into practiceThis week it is WWF EPO’s turn!We have launched a Sustainable Energy Week, a chance for everyone to learn and share how to make energy changes that matter and to become more familiar with the solar installation on our roof and smappee.This cute device enables everybody to easily check at any time how much electricity we use and solar electricity we produce.Everyone in the office can do it, techie or not.When do you start? You might be surprised what a difference it makes.Jean-Philippe Denruyter is the manager for Applied Energy Solutions at WWF. He is based in Belgium. jdenruyter@wwf.euLearn more about WWF’s work on solar energy.·RELATED QUESTIONWhy don't hotel rooms have ceiling lights?My hotel building is over 100 years old, so we have ceiling lights. We also need a ladder to change a bulb 11' from the floor. It can take 20 minutes for 1 bulb! This is one reason that we have changed to the longer lasting (and more economical) low-energy bulbs.I would be delighted to have wall lights instead. Retro-fitting them would however be even less economically sound.Higher than average ceilings mean ladders to change the bulbs in ceiling fittings, and this extends the maintenance time and convenience for staff enormously. Even normal height ceilings mean that a chair is needed to swap a bulb out. Wall fittings are so much more convenient for both staff and customers, reducing the time taken to get light again!As Michael Forrest Jones says - anything other than a simple bulb swap requires the power to be cut to the whole circuit (which may be more than just a few rooms). This makes it very awkward to do emergency repairs after dark! -- Been there done that... Go with wall fittings that can be isolated in-room!In short:I have ceiling lights.I don't like them, as they are awkward for maintenance.Replacing them would be expensive and extremely difficult - basically a total rewire of the hotel lighting system.Design engineers are not stupid. they note the first 2 points!
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