Introduction: Solar Light Conversion

take a cheap solar light and make a useful battery charger

Comments

author
digitalist (author)2008-08-25

Your solar cell looks like it can only produce 2-volts. Connecting it to a 9v battery will only drain it.

author
georion (author)digitalist2012-08-27

how did you arrive at looks like only 2 volts ?????????????

author
digitalist (author)georion2012-08-27

Most garden variety LED lights running off AA or AAA rechargeables use 2 volt solar cells.

author
ortho (author)digitalist2008-08-26

ok the i will only use AA or AAA

author
kevholio (author)2011-11-09

Without a load, those cells will produce at least 7v. I have several of these i have taken apart and they all read between 5 - 9v on my multimeter.

author
Dorkfish92 (author)2008-08-25

cool! Is there anything keeping it from over-charging? Or do you just go rab the batteries when you think they're done?

author
netbuddy (author)Dorkfish922008-10-11

LOL, overcharging. A small cell like that will never have the capacity to overcharge. It is when you get to the larger Wattage output that you have to start considering these things.

author
Sandisk1duo (author)Dorkfish922008-08-25

there porobalby isn't a circuit that does that, but the resistance of the batteries changes when they are charged, so that they almost stop the charging

author
TheWelfareWarrior (author)2008-08-25

good Instructable,watch the spelling,and grammar... doesn't it take a long time to charge multiple batteries?

author
ortho (author)TheWelfareWarrior2008-08-26

yes it takes awhile but if you need it its there just something to do really

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Bio: i am a carpenter ,i love to build or to make it work .sure it would be easier to buy things but where is the ... More »
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