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Old 02-26-2006, 10:12 AM   #1
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Default Soldering batteries - help

Hi,

I need some help soldering batteries... I have tried all the soldering irons I have at home (60W and 100W) and neither makes the tin stick to the battery... what type of soldering iron should I use?

Also, what about using JB Weld?

Also, what about cold heat soldering battery packs?

TIA
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Old 02-26-2006, 10:28 AM   #2
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make sure you scuff up the terminals, i use 300 grit sand papper , it will give the solder something to ancor to
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Old 02-26-2006, 10:39 AM   #3
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Quote:
Originally Posted by JasonC
make sure you scuff up the terminals, i use 300 grit sand papper , it will give the solder something to ancor to
I did, I Dremeled both sides of each cell...
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Old 02-26-2006, 10:52 AM   #4
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You want at least a 60W soldering iron with a 3/16" wide flat tip.

Let the tip completely heat up before using (tinning) so it can transfer heat more effectively to what you are soldering. Repeatedly clean the tip and re-tin for every connection you use it on.

As Jason says, you need to slightly scuff up both ends of the cells before soldering. I use a Dremel to do that. I also pre-solder the scuffed cell locations where the bars will be attached.

When done properly, your hot iron tip will only be making contact with the surface of the cell for 5-10 seconds to pre-solder and solder. If it is taking longer...Stop!...You don't want to overheat the cells. Let them cool back down and rethink what you are doing.

Use good rosin core solder...Deans, etc. Use a cell building jig to hold it all together while you solder.

Seems that Balak Racing had a good article on building packs...with pictures.
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Old 02-26-2006, 10:59 AM   #5
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use deans solder, rosin core solder. also what type of tip is on your soldering iron ?
pencil type types dont work as well. a screwdriver (chisel) tip works the best.
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Old 02-26-2006, 11:25 AM   #6
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I use Radio Shack computer solder...works awesome! And I still use the Weller 40 watt cheapie iron, and that also produces excellent results.
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Old 02-26-2006, 11:25 AM   #7
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Quote:
Originally Posted by baih
use deans solder, rosin core solder. also what type of tip is on your soldering iron ?
pencil type types dont work as well. a screwdriver (chisel) tip works the best.
I'm using a chisel type tip...

Unfortunately, I cannot get deans solder... however, what should I ask for at the shop? Rosin core solder?
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Old 02-26-2006, 12:45 PM   #8
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are there any electronic stores near you.
get rosin core solder, or if the store has kester "44" solder. dia .031 is what i use.
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Old 02-26-2006, 02:42 PM   #9
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Quote:
Originally Posted by baih
use deans solder, rosin core solder. also what type of tip is on your soldering iron ?
pencil type types dont work as well. a screwdriver (chisel) tip works the best.
yes, deans is greeeeeeaaaaaaaat!!!! Its a 60/40 resin core. i dont' like radio shacks' solder, deans works muuuuuuuuuch better.
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Old 02-26-2006, 03:03 PM   #10
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here you go...
http://www.taobracing.net/review_batterysoldering.shtml

Hope that helps,
-Shookie <><
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Old 02-26-2006, 05:37 PM   #11
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And if you want the best, check out this soldering gun.
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Old 02-26-2006, 05:57 PM   #12
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lol, industrial, lol. I've always been parcial to a blow torche and sitck of pipe solder, hehe.
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Old 02-26-2006, 07:08 PM   #13
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You might try using some flux.
You can get it at radioshack. Scuff the batt. Then put some flux on it.
Then tin it. It helps out a great deal. I use a cheap 40 watt radioshack iron and have no prob soldering batts when I use the flux
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Old 02-26-2006, 08:02 PM   #14
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yeah flux makes a big difference. And i always scratch a coss and then cross again ontop of the cell with a reamer tip or a craft knife blade.
Make sure that you apply the sodering iron on for long enough so that the solder can melt and bond onto the cell. But dont hold it for to long
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Old 02-27-2006, 04:15 AM   #15
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if you don't wanna deal with flux, deans already has it in it. Also, it may be wise to score the batter bar ends as well as the cell.
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