Solar cell phone charger
Solar cell phone chargers use solar panels to charge cell phone batteries. They are an alternative to conventional electrical cell phone chargers and in some cases can be plugged into an electrical outlet.
There are also public solar chargers for mobile phones which can be installed permanently in public places such as streets, park and squares. The model which is according to European Commission proclaimed as the first in the world is the Strawberry Tree, public solar charger invented by Strawberry energy Company. This solar station won the first place at "EU Sustainable energy week (EUSEW) 2011" in the Consuming category.
Solar cell phone chargers come in different shapes and configurations including folding (Goal Zero, Endless Sun Solar) and rotating types (Solio).
They also come in the form of straps, with solar cells on the outer surface and a nickel metal hydride battery within. Current solar cell technology limit the effectiveness and practicality of phone solar chargers for everyday use. Phone charge times vary depending on the battery capacity installed which continues to increase, further extending the charge times of solar chargers. The fold-out design has proven to allow for higher charge current while maintaining a compact size and current designs are capable of charging a modern smartphone in 3 hours.
Solar chargers are also available for other cell phone accessories, such as bluetooth headsets and speaker phones.
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