ITTSB.EU Blog Forum
ITTSB Blog Specific => ITTSB - Small projects by Kiriakos & User reviews => Topic started by: Kiriakos GR on August 07, 2012, 02:41:18 AM
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Just got today this mini solar flashlight for just 1 Euro from a local bazaar.
The light beam were so bright and with great coverage at 5-7 meters away,
and interestingly enough it is very wide too.
Well I do not like to take things apart, but my curiosity of what type of battery is inside it did break every record.
What I found inside is a Lithium cell that is not famous for their recharging capabilities.
The solar panel it does work, and it produces 5.5V just by indoor strong light .
Even so with out the battery, those LEDs they do not operate at all.
About external construction it is totally unprotected about humidity.
The truth is that there is out there rechargeable coin batteries which are used in digital cameras so to keep the calendar alive, but they are made by two manufactures worldwide, and they cost about 8$ USD.
For the price I should not have major expectations, but even as education it is good enough. ;)
Enjoy the pictures!
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I did some experiments with this little panel, I wanted to find out what it can do.
Well my findings it is a bit disappointing, the max that it can do is 3V at 2mA load,
when with out load it does 7V .
I was hopping for about 10-20mA for the project that I had in mind.
Either way here is one last set of pictures about it. :)