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Are there anywhere to request free photovoltaic cell????

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Very little in life is free you will have to work at getting them. A company letter head and a projected sales volume will probably get them interested in giving you some samples but your presentation will have to look professional.

Good luck ;)

Send Email to Photowatt International S.A.

Send Email to Npower Energies

Send Email to Shenzhen Xinhonghua Solar-Energy Co., Ltd (Representative:Angel)

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My electrical Utility gave away free solar garden lights. I got 10 of them.
I can see them glow at night but they don't light up anything because they are dim.
They have a single 1.2V AA Ni-Cad battery cell and a voltage stepup circuit. The dim LED is amber colour.

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