No Battery..How To Make Emergency Light Without Battery..Emergency Light
Recycle is never getting old. It keeps the world green and gives old things a new life. I love recycling, then I make new emergency light from a dead battery.
My dad gave me this dead battery after he replaced his motorbike battery. This battery is 100% dead. When I connect a 10 ohm resistor, voltage dropped from 7.6V down to under 1V and current is 10mA.
Firstly I have to clear the negative terminal because it rusted. I use WD-40 and RP7 but it just loose out a bit. Then with the help of a dremel, I can cut the bolt out.
Then I open the cover to fill water into the battery using a cylinder. The battery is dried so it absorbs lots of water, and takes a long time. After that I recharge the battery. It takes a few hours to charge it up until it got 12.5V remaining after disconnected. I test with a resistor and it shows the battery is worked.
An high power 10W LED (or two if the battery is strong enough)
Soldering tin
A switch
Some wire
Hot glue gun
Cable stripper
And soldering iron
LED focus lens is optional.
Trim the isolation of the wire, wrap the wire around the battery's terminal and solder it. My battery negative terminal is a bit damaged but no problem. After solder, check with a multimeter.
Solder the LED and the switch. Look careful its terminal.
Turn on to check
Twist the wire and apply hot glue to the LED and wires to secure it.
The hot glue used to secure the LED chip, also absorb heat from the chip. The cool thing is this LED works with voltage between 9V to 12V so it still works even when the battery is running out.
The battery has a new life from now. Although it is not as good as the new one but I can use it as an emergency light. I leave it on after a night but still full charge. The battery is totally fit-in-the-box and save some space. It doesn't have a fancy look but it makes me feel good.
I create a new part which show in the image. New part is parallel with the switch to work independently. It makes this light glow when it gets dark. It's very good for garden light and fully automatic.
No Battery..How To Make Emergency Light Without Battery..Emergency Light
Recycle is never getting old. It keeps the world green and gives old things a new life. I love recycling, then I make new emergency light from a dead battery.
My dad gave me this dead battery after he replaced his motorbike battery. This battery is 100% dead. When I connect a 10 ohm resistor, voltage dropped from 7.6V down to under 1V and current is 10mA.
Firstly I have to clear the negative terminal because it rusted. I use WD-40 and RP7 but it just loose out a bit. Then with the help of a dremel, I can cut the bolt out.
Then I open the cover to fill water into the battery using a cylinder. The battery is dried so it absorbs lots of water, and takes a long time. After that I recharge the battery. It takes a few hours to charge it up until it got 12.5V remaining after disconnected. I test with a resistor and it shows the battery is worked.
An high power 10W LED (or two if the battery is strong enough)
Soldering tin
A switch
Some wire
Hot glue gun
Cable stripper
And soldering iron
LED focus lens is optional.
Trim the isolation of the wire, wrap the wire around the battery's terminal and solder it. My battery negative terminal is a bit damaged but no problem. After solder, check with a multimeter.
Solder the LED and the switch. Look careful its terminal.
Turn on to check
Twist the wire and apply hot glue to the LED and wires to secure it.
The hot glue used to secure the LED chip, also absorb heat from the chip. The cool thing is this LED works with voltage between 9V to 12V so it still works even when the battery is running out.
The battery has a new life from now. Although it is not as good as the new one but I can use it as an emergency light. I leave it on after a night but still full charge. The battery is totally fit-in-the-box and save some space. It doesn't have a fancy look but it makes me feel good.
I create a new part which show in the image. New part is parallel with the switch to work independently. It makes this light glow when it gets dark. It's very good for garden light and fully automatic.
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