Instructables

400 lumen 12v lantern

Picture of 400 lumen 12v lantern

Easy way to create a long lasting brighter than Fluorescent style lantern and re-chargeable for camping or tailgating

 
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Step 1: Materials

Picture of Materials
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DSCF2123.JPG

materials list:

Any table lamp with a spot big enough to hold heat sink near base for LED - inexpensive ones can be found at Home Depot in lighting section for under 20 bucks or old battery lantern big enough to hold 12v 4 amp hr battery 4 inches by 4 inches ( this is what I based this instructable on)

12v 4 ahr battery -radio shack or amazon 20 bucks

star LED - can be 1 watt xpg series from Cree mounted on star heat sink - Deal extreme.com has these for 5- 10 bucks or other led supply houses

LED lens- this can be any glass or plastic tube such as a prescription bottle or container

LED driver - this supplies current and does all the thinking to make this easy and efficient to build - some choices are Buck puck 3021 from led dynamics - can be found directly or digi- key - mouser electrical suppliers or deal extreme has a bunch of 12 in to LED out converters (2-20 bucks)

LED heat sink - can be found at Mouser or digi key - 6 bucks

basic toggle switch or rotary switch rated for at least 3 amps dc current (10 bucks max)

NickDH1 month ago

I really think this is good, I love lighting and 12 volts, lol.
But I do want to warn you that it's dangerous to charge the battery sideways, even if it's sealed, it can still leak.
But, nice idea!

bhvm2 months ago
that makes it even sweeter!
do look for batwing luxeon lenses before testing it apart. these project the light backwards and sideways.
craftclarity bhvm2 months ago

Yeah those luxeon batwing profile LEDs are awesome

Artia2 months ago

It is a nace idea usig an old lantern avían

bhvm2 months ago

Voted For you!

The Idea to resurrect a Lowly, chinese Emergency light with pure Cree pedigree is very useful and Long term idea. Keep it up!

sanders2001 (author)  bhvm2 months ago
Hah..thanks ..with intermittent use it will last a week when camping, the one thing i would change is mount the led so it shines downward - that way when held up high it covers a big area, also not mentioned is that there are 2 multi color leds that draw very little current I use for night light option and the Driver module has dimmer option
-sa