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Old 10-20-2007, 10:14 AM   #1
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Default Best way 2 make a Homemade Discharger?

Hey,

Wats the best way to make a homemade discharger?
Wat blubs are the best to do it with?

Share some pics and ideas pls

Cheers,
JONo
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Old 10-20-2007, 04:44 PM   #2
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might think about picking it up used , pretty good deals with people going lipo, ray
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Old 10-20-2007, 05:45 PM   #3
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I used this article
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Old 10-20-2007, 06:39 PM   #4
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you can get 4 - 1ohm 10w resistors from radioshack, and hook them up in parralel. it will have a discharge current of about 20-30 amps depending on your battery. have some sort of a way to cool it down, or at least something none-flamable to set it on, as it gets VERY hot.

or you could hook up a gazilion lightbulbs ( tailight ones ) in series, and get 5-10 amps discharge. if you go with bulbs, get sunglasses!

cheers!
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Old 10-20-2007, 07:10 PM   #5
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The bulbs you need are 1157's I believe, 10 bubls give you 20 amps of discharge.
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Old 10-21-2007, 10:36 AM   #6
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12 volt 50w ceiling lamps. 5 gives 20 amp discharge. (roughly. we have a test rig for capacity checking car batteries that uses a set of these) you have to have a volt meter attatched to stop when the batteries reach 1 volt or whatever. (any lower and the accuracy of the thing means you risk killing the cells)
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Old 10-21-2007, 01:02 PM   #7
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If you build one , make sure you buy a voltage cut off switch, or you will dead short your battery's . when I first built mine, I didn't know about the cut off and I killed a brand new battery .

I also have two Integy equalizing trays for sale in the for sale forums.
Check it out , http://www.rctech.net/forum/showthread.php?t=183840

If you were to buy one or both of the equalizer trays, I would throw in
the light bulb discharger with cut-off switch for Free .

PM me if your interested.
Thanks Mike.
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Old 10-21-2007, 03:39 PM   #8
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See a cut off switch here
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Old 10-21-2007, 04:05 PM   #9
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Quote:
Originally Posted by FOXY923 View Post
See a cut off switch here
That's it ! Its even got my initials on it, MPH .
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Old 10-21-2007, 04:21 PM   #10
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10 #1157 brake light bulbs strung together is 20amps, a cutoff is nice to have, but eyeballing the lights when they get dim is good enough usually
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Old 10-23-2007, 03:46 PM   #11
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Quote:
Originally Posted by *Chrominator* View Post
That's it ! Its even got my initials on it, MPH .
you have cool initials! you can tell your freinds you have a monogrammed speedometer in your car!
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Old 10-23-2007, 03:58 PM   #12
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Quote:
Originally Posted by joe of loath View Post
you have cool initials! you can tell your Friends you have a monogrammed speedometer in your car!
Ha Ha That's a good one , I will have to remember that one.
I guess I was born for SPEED
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Old 10-23-2007, 04:01 PM   #13
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Quote:
Originally Posted by alexb2000 View Post
The bulbs you need are 1157's I believe, 10 bubls give you 20 amps of discharge.
Yup thats what I used. I had 15 in an aluminum enclosure with open ends.
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