Introduction: DIY Rechargable Bright LED Light From Laptop Battery
I was having few old laptop batteries in my junkyard therefore I have decided to make some use of those batteries. Normally laptop batteries are of 3.6 to 4V rating therefore I have searched a LED strip from market here in Pakistan those LED strips are very common and easily available therefore I have selected a strip of 18LEDs, such strips are available for 20 cents (20 Rupees) from Pakistani market.
Now I have purchased Nokia battery charger socket a charging indicator LED and a switch and a diode all those spares are available for 10 cents (10 Rupees)
So if you have old laptop batteries you can construct this LED light just for 30 cents.
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Circuit is very easy
1. just connect battery with LED strip via switch
2. Connect charging socket with battery via a diode
3. Connect charging indicator with LED to charging socket.
Your Extra Bright DIY Light is Ready