Battery charging of cell phone using solar energy

[sha_virgo]

hi... i have a thought in advance, that i can charge my cell phone through solar energy itself . actually I am doing my activities regarding that... giva me some suggestions which is helpful for me.. and i want to know why this is still not in market..my project is reasonable or not ?...

 

[f95toli]

and i want to know why this is still not in market..

Solar powered cell phone chargers have been around for quite a while. Just google it.
See e.g the following review.
http://reviews.cnet.com/4520-11288_7-6427792-3.html

 

[Pumblechook]

It doesn't make sense cost wise. You will spend far far more on a panel and the control electronics than you will ever save from not using the mains. The energy involved is pretty small.

Say it a 5 watt-hour battery and even with an inefficient charger which takes 10 watt-hours from the mains to charge the battery you would have to charge the phone 100 times to use to use 1 KWh. At UK prices a KWh costs about 12 pence (24 cents US?)
You would probably do far less than 100 charges in a year.

Your solar power would be 100's of times more expensive than mains power.

It is only of any use if there is no other source of power.