take a cheap solar light and make a useful battery charger

Step 1: Open the Case

with a coping saw i opened the case

Step 2: Get at What Ya Want

solar cell and charging circuit

Step 3: Remove the Unwanted Parts

don't cut your self or the cell score several times with a sharp blade

Step 4: True the Edge

its easiest to place the sand paper flat on a surface and move the cell

Step 5: The Case

any case should work i had this one I'm not sure where i got it

Step 6: The Circuit

remove the led and the off switch but i left the leads long enough to attach easily

Step 7: Reconnect the Cell in the Case

reconnect the leads to there proper place i added a 9volt clip so i can switch between 9volt AA and AAA
Your solar cell looks like it can only produce 2-volts. Connecting it to a 9v battery will only drain it.
how did you arrive at looks like only 2 volts ?????????????
Most garden variety LED lights running off AA or AAA rechargeables use 2 volt solar cells.
ok the i will only use AA or AAA
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.<br>
cool! Is there anything keeping it from over-charging? Or do you just go rab the batteries when you think they're done?
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.
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
good Instructable,watch the spelling,and grammar... doesn't it take a long time to charge multiple batteries?
yes it takes awhile but if you need it its there just something to do really

About This Instructable




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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