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Old 08-27-2005, 02:42 PM   #1
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Default Battery Soldering

Hi

I always have problems buying new cells, lately i bought few 3700's but i have problems soldering them.Well would any body tell me what is the perfect way for soldering. I use 200 watts soldering iron and i use team orion gold battery bones and a deans soldering lead.
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Old 08-27-2005, 02:51 PM   #2
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Follow the link below and look for the video. The battery he builds are for electric planes but the basics are the same.

http://www.rcgroups.com/forums/showt...hreadid=148112
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Old 08-27-2005, 02:53 PM   #3
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Quote:
Originally Posted by Secret_weapon
Hi

I always have problems buying new cells, lately i bought few 3700's but i have problems soldering them.Well would any body tell me what is the perfect way for soldering. I use 200 watts soldering iron and i use team orion gold battery bones and a deans soldering lead.
200wt iron? Isn't that a little extreme?
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Old 08-27-2005, 03:31 PM   #4
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Tell me if I'm wrong but wouldn't you want to get the soldering iron off the battery as quick as possible so it doesn't cause damage to the battery?

Then if you use a hotter iron, it would be better.
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Old 08-27-2005, 08:30 PM   #5
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Quote:
Originally Posted by Secret_weapon
Hi

I always have problems buying new cells, lately i bought few 3700's but i have problems soldering them.Well would any body tell me what is the perfect way for soldering. I use 200 watts soldering iron and i use team orion gold battery bones and a deans soldering lead.
What exact problems are you having?

Make sure you tin the cells first!

Sean
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Old 08-27-2005, 08:41 PM   #6
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It's also a good idea to sand down a little bit the ends of the cells so the solder sticks better.
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Old 08-27-2005, 09:23 PM   #7
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Quote:
Originally Posted by Team Duratrax
What exact problems are you having?

Make sure you tin the cells first!

Sean
Well, if you tin the cells then the bar is not having a direct connection to the cell, instead theres some solder between it.
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Old 08-27-2005, 09:37 PM   #8
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I gey my cells buily by a pro..
He reccomends using a jig, and any where from 80 to 120watts, anything over isnt gonna work its just gunna make things harder by getting everything too hot..
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Old 08-27-2005, 10:19 PM   #9
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Quote:
Originally Posted by DOMOisCOOL
200wt iron? Isn't that a little extreme?
I could be wrong, but from the sound of it I suspect he has a soldering GUN, not an iron(a soldering gun can be as high as 200 watts, but you generally don't see irons over 120 watts), & if I'm right, that's most likely why he has trouble. The tips on guns simply don't have NEARLY enough sufface area to conduct heat quickly to the surfaces being connected, so it becomes difficult to solder items that have a significant area(like battery bars to cells). The more surface area in the tip of your iron, the better it'll work for our kind of tasks, & with a good tip, you can get it done safely with as little as 40 watts of power in the iron(but you do have to be careful with that level of wattage, gotta do it right the first try & have to give it a few more seconds after each connection for it to heat up properly again).....
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Old 08-28-2005, 02:56 AM   #10
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give this site a look over it should help you http://www.balakracing.com/soldering.htm
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Old 08-28-2005, 05:21 AM   #11
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Would there be any way of modifying a 40w iron to say 60w?

Sean
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Old 08-28-2005, 07:29 AM   #12
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Quote:
Originally Posted by Team Duratrax
Would there be any way of modifying a 40w iron to say 60w?

Sean
Not possible ... the limitations of the iron are based on the ceramic and thermo-conductive wiring inside. You can go lower by using a heat adjustment base - higher is not possible. Invest in a 80 watt iron with an adjustable base and you will be set for the rest of your RC career. Weller makes some great and inexpensive units.
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Old 08-28-2005, 10:48 AM   #13
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Weller sells a 80 watt pencil type solder iron with a 3/8" chisel tip for about $20. Pretty easy to find in hardware stores. The 40 watt model with the 1/4" tip works well also, but not as good as the 80 watt.

The 80 watt will nearly vaporize solder once it's good and hot. The tip is huge and has lots of thermal mass. You only have to touch the bar/cell for an instant, literally. Excellent joints, and very little total heat is transferred to the cell.

I am amazed solder guns are still being sold. They are almost completely worthless.
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Old 08-28-2005, 03:41 PM   #14
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http://teamorion.com/faq/battery-building.asp

Some pictures here too.

Battery jig is mandatory.

You have to tin the cells and you might want to use extra flux too. 80W soldering iron is enough, what is important is the size of the tip, a larger tip will not cool down as fast and will give you time to do proper joints. The Ungar soldering irons are pretty good. You don't want something that is the size of a crowbar

Also don't buy the cheapest solder you can find. I use Multicore with 2% silver in it and it works like a charm, I don't need to use extra flux.
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Old 08-28-2005, 05:55 PM   #15
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Last edited by cr250; 10-19-2013 at 04:16 PM.
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