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Solar cell phone chargers use
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Solar cell phone chargers use solar panel
A solar cell panel, solar electric panel, photo-voltaic (PV) module, PV panel or solar panel is an assembly of photovoltaic solar cells mounted in a (usually rectangular) frame, and a neatly organised collection of PV panels is called a pho ...
s to charge cell phone batteries. They can be used when no electricity supply is available—either mains or, for example, a vehicle battery—and are sometimes suggested as a way to charge phones without consuming mains electricity, unlike electrical cell phone chargers
A battery charger, recharger, or simply charger is a device that stores energy in a battery by running an electric current through it. The charging protocol (how much voltage or current for how long, and what to do when charging is complete) depe ...
. Some can also be used as a conventional charger by plugging into an electrical outlet
AC power plugs and sockets connect electric equipment to the alternating current (AC) mains electricity power supply in buildings and at other sites. Electrical plugs and sockets differ from one another in voltage and current rating, shape, s ...
. Some chargers have an internal rechargeable battery which is charged in sunlight and then used to charge a phone; others charge the phone directly.
There are also public solar chargers for mobile phones which can be installed permanently in public places such as streets, park and squares. One such is the Strawberry Tree public solar charger.
One cell phone model was reported in 2010 to have a built in solar charger. Solar chargers are commercially available for cellphones.
Solar cell phone chargers come in different shapes and configurations including folding (Goal Zero, Endless Sun Solar) and types that unfold like petals (Solio).
They also come in the form of straps, with solar cells on the outer surface and a rechargeable battery inside. Solar cell technology limits the effectiveness and practicality of phone solar chargers for everyday use. Phone charge times vary depending on the solar panel size and efficiency, or the battery capacity of models with batteries, further extending the charge times of solar chargers. The fold-out design provides a larger solar panel, hence higher charge current, and is compact when not in use.
Solar chargers can be used to charge other rechargeable devices with requirements similar to a mobile phone, such as Bluetooth
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limit ...
headsets and music players.
Solar chargers used to charge a phone directly, rather than by using an internal battery, can damage a phone if the output is not well-controlled, for example by supplying excessive voltage in bright sunlight. In less bright light, although there is electrical output it may be too low to support charging, it will not just charge slower.
Some of these chargers are flexible and some can also power solar coolers.
See also
*Street Charge
Street Charge is a solar-powered phone charging station developed by NRG Energy, Inc., designed to grant free phone charging services to pedestrians and tourists.
The charging stations can also be modified to emit Wi-Fi signals and display advert ...
Gallery
References
{{Photovoltaics Applications of photovoltaics