make your own battery charger (austospeed article)

Post by **AMPrentice** » Mon, 21 Jan 2013, 18:11

http://autospeed.com/cms/A_112906/article.html

seems good but the title pic showing the complete unit with the black transormer on the wooden base looks like a Zivan or some kind of brand unit nothing like the inset pic below with the other black unit.

Post by **coulomb** » Mon, 21 Jan 2013, 18:46

This is the worst kind of totally unregulated charger you can imagine. In fact, with the suggested 12 V transformer, it will be applying peaks of 17 V, less two diode drops, call it 15 V, to the battery. I'm not liking it. Proper 12 V battery chargers aren't that dear.

I think the black unit in the title picture is just his halogen transformer, not a Zivan charger.

Post by **Richo** » Mon, 21 Jan 2013, 20:25

Yeah I wouldn't recommend it.
And is only useful IF you have those parts laying around.
otherwise is cheaper to buy a proper one.

The one at the end of the story isn't cheap - just looking at the skiived heatsink...

Post by **cts_casemod** » Fri, 25 Jan 2013, 02:42

I am building a cheap HV charger based on a computer SMPS. Its only 300Watts but it is stackable as required (For my case 4x300W = 1.2KW to charge a 6.5KW 650V Battery.
Mmbership required to check pictures

Silly me, forgot the link

VW Polo Conversion

Post by **AMPrentice** » Sat, 26 Jan 2013, 16:31

I havent voted for the article but now with the help of your comments I will vote