# How to make a 12v 21amp DC-DC for $50 retail

**URL:** <https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653>\
**Category:** Buy, Sell, & Trade\
**Created:** [May 4, 2008, 8:09pm UTC](https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653 "2008-05-04T20:09:29Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lazzer408](https://avatars.discourse-cdn.com/v4/letter/l/e9c0ed/32.png) [@lazzer408](https://community.electricforum.com/u/lazzer408)\
**Post date:** [May 4, 2008, 8:09pm UTC](https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653/1 "2008-05-04T20:09:29Z")

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[http://www.evforum.net/forums/showpost.php?p=2602&postcount=17](http://www.evforum.net/forums/showpost.php?p=2602&postcount=17)

😃

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**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\
**Post date:** [May 4, 2008, 9:06pm UTC](https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653/2 "2008-05-04T21:06:48Z")

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let us know how it turns out!

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<div class="post-metadata">

**Author:** ![lazzer408](https://avatars.discourse-cdn.com/v4/letter/l/e9c0ed/32.png) [@lazzer408](https://community.electricforum.com/u/lazzer408)\
**Post date:** [May 4, 2008, 11:02pm UTC](https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653/3 "2008-05-04T23:02:16Z")

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Works like a charm!! 😃

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**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\
**Post date:** [May 6, 2008, 12:24pm UTC](https://community.electricforum.com/t/how-to-make-a-12v-21amp-dc-dc-for-50-retail/653/4 "2008-05-06T12:24:07Z")

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[http://www.endless-sphere.com/forums/viewtopic.php?f=16&t=2264&st=0&sk=t&sd=a](http://www.endless-sphere.com/forums/viewtopic.php?f=16&t=2264&st=0&sk=t&sd=a)

might post there too 🙂