Single LED Flashlight on 9 Volt !!




Introduction: Single LED Flashlight on 9 Volt !!

About: "May the good belong to all the people in the world. May the rulers go by the path of justice. May the best of men and their source always prove to be a blessing. May all the world rejoice in happiness. ...

This I'ble shows how to make a single LED flashlight from a 9v battery, that LASTS MORE THAN 200 HOURS !!! Unlike normal ones which last between 5 to 10 hours.

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Step 1: Components Needed:

1) 9v battery
2) 9v clip
3) 2k ohm 1/4 watt resistor (even higher wattage would do, like 1/2 watt, which has slightly thicker wires)

Important Note:

Increase resistance to higher value, say 6.7k ohm or 10k ohm, if you are using lower rating led otherwise the led would burn out


decrease it to 1k, if you have a worn out battery.

4) Insulation Tape
5) LED - colour of ur choice

Step 2: Assemble Them

1. Connect the resistor to the negative of the led.

2. Then connect the clip - red wire to positive of the led and resistor + led leg to the negative wire of the clip.

Done, simple !

Step 3: Final Results !!

See the pics !

Green Light aids night vision
Red light aids night vision
yellow light keeps mosquitoes at bay
blue is so cool !

Step 4: Important Advice to All: (Please Read)

Salient Features:

• Works on a single 9 Volt Battery
• Just separate the lid from the battery when not needed for use

• Lasts Much Much Longer than conventional flashlights - upto 200 hours, as compared to just 4-5 hours in normal flashlights!!!
• Aids in Night Vision because of colour choice (Green)

*** You can make a sensor version and attach it to your zip coat or pocket so that it automatically lights up when in a dark place or when entering your room / home. No fumbling for light switch !

Possible Uses:

• Flash Light
• Night Light
• Mood Light
• Floor Light
• Reading Light
• Travel Light – Occupies virtually NO space !
• Morning / Evening walk light – use rubber band to tie to wrist or just put it in pocket
• Help kids overcome fear of darkness, by encouraging them to go with it
• Noiseless Diwali / festival Gift

Possible Gifting Ideas:

• As an educational toy to different children
• Innovative Gift to friends & relatives
• For elder citizens as floor light in rooms or night light to aid vision at night
• For charitable purposes to various institutions

Step 5: Vote, Rate, Post Pics & Comment !

So please go ahead and MAKE SOME !! And dont forget to vote, rate, post pics and comment !!


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    10 Discussions


    3 years ago

    Awesome! I needed a single LED for a art project and this worked perfectly! Thank you


    Reply 3 years ago

    Great! Congrats and welcome!


    6 years ago on Introduction

    Yes it would fit in an altoids tin, with a switch. But this is a quick fix version. A 1k or 2k resistor is needed since this battery is 9V, whereas the LED can take only 3 volts.



    6 years ago on Introduction

    Wouldnt this work in a altoids tin and do u really need a resistor


    8 years ago on Step 5

    this ROCKS!
    i will def make some.
    Mr Steve


    Reply 8 years ago on Introduction

    Tx, all the best!
    "May the good belong to all the people in the world.
    May the rulers go by the path of justice.
    May the best of men and their source always prove to be a blessing.
    May all the world rejoice in happiness.
    May rain come in time and plentifulness be on Earth.
    May this world be free from suffering and the noble ones be free from fears" ---- Vedic blessing


    Reply 8 years ago on Introduction

    made it today!
    Drilled 4 Green LEDs into a bent L-shaped plastic. 2x taped battery & added a switch.
    Mr. Steve


    Reply 8 years ago on Introduction

    Its brilliant!Ill comment and rate it right now!!!
    Have a look at my ibles!!!