RE: My custom Rx hump pack  
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RE: My custom Rx hump pack - 5/6/2008 4:00:45 AM   
go-to



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From: Lafayette, LA, USA
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quote:

ORIGINAL: Rudeboy

Soldering battery cells works best if you use a heavy tip on your soldering iron: it stores more heat than a small tip.
The faster you can solder, the better for the cell: batteries don't like excessive heat. That means a big iron.
Properly sand the battery terminals: they're likely to be nickel plated against corrosion.
Use an etching compound, this really helps, but you have to wash the remains off afterwards.
First tin the battery terminals and the wire seperately, solder them together afterwards.

That about sums it up.


I wouldn't suggest this to someone with no technique...from someone that's soldered for so long at such a high level. Giving anyone with no experience a hot iron and large tip is just *asking* for a burnt piece.

And you don't need to sand or etch on the terminals. I didn't on this pack I made here.

Now you are correct about tinning both the battery and wire before putting them together. That is great technique that not many follow.

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(in reply to Rudeboy)
       Post #: 26

RE: My custom Rx hump pack - 5/6/2008 4:33:38 AM   
Rudeboy



Posts: 3255
Joined: 12/9/2002
From: Bejing, BELGIUM
Status: offline 		Well, if you use too small an iron, you're gonna be frying your cells. I'm not saying you should use a 150W gutter soldering tool. I'm saying you should use a decent temp controlled iron, at least 35 to 40 watts strong, set at no more than 280-290 degrees C (535-555 degrees F) when using standard 60/40 Sn/Pb resin core solder.
The bigger tip has more heat capacity at low temps, so it won't cool down below soldering temp.

My experience is that an etching compound helps when soldering cells with resin core solder. I always use it. It cuts down the time needed to tin the terminals, and again less heat into your cells is better.

Sanding "may not" be needed, but it sure helps. Bare metal works best, and you never know what these cells are coated with. It certainly won't hurt anything!


But that's just my 0.02$

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       Post #: 27

RE: My custom Rx hump pack - 5/6/2008 5:01:02 AM   
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Posts: 1258
Joined: 12/28/2004
From: Lafayette, LA, USA
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quote:

ORIGINAL: Rudeboy

Well, if you use too small an iron, you're gonna be frying your cells. I'm not saying you should use a 150W gutter soldering tool. I'm saying you should use a decent temp controlled iron, at least 35 to 40 watts strong, set at no more than 280-290 degrees C (535-555 degrees F) when using standard 60/40 Sn/Pb resin core solder.
The bigger tip has more heat capacity at low temps, so it won't cool down below soldering temp.

My experience is that an etching compound helps when soldering cells with resin core solder. I always use it. It cuts down the time needed to tin the terminals, and again less heat into your cells is better.

Sanding "may not" be needed, but it sure helps. Bare metal works best, and you never know what these cells are coated with. It certainly won't hurt anything!


But that's just my 0.02$


[Sarcasm mode on]

Thanks for the lesson...very very helpful to me.

[/Sarcasm mode off]

Man I wanna say more, but I'll let it go if you will. I certainly don't need a lesson in basic soldering skills.

_____________________________

Savage X SS, FLM LCG TVP, Axial .28, 3-speed, 18/49
Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

(in reply to Rudeboy)
       Post #: 28

RE: My custom Rx hump pack - 5/6/2008 5:39:43 AM   
Rudeboy



Posts: 3255
Joined: 12/9/2002
From: Bejing, BELGIUM
Status: offline 		Well, I'm sorry I hurt your feelings...



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       Post #: 29

RE: My custom Rx hump pack - 5/6/2008 5:44:00 AM   
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Posts: 1258
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From: Lafayette, LA, USA
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quote:

ORIGINAL: Rudeboy

Well, I'm sorry I hurt your feelings...




Ya didn't. That was the point.

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Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

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       Post #: 30

RE: My custom Rx hump pack - 5/12/2008 4:27:38 AM   
nghtrdr


 

Posts: 4
Joined: 1/19/2008
From: Toronto, ON, CANADA
Status: offline 		hmmm...
me likes!
great work man.
i use those same cells in my tx they last forever.
my question is about charging. if i make this pack (im not too bad at soldering) can i charge it using my Team Orion Avionics advanced flight charger (#ORI62200). what charge current should be used? can i still fast charge?
hxxp://www.teamorion-avionics.com/Advantage+Chargers/Advanced+Flight+Charger

thnx and again great work!
nightrider

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       Post #: 31

RE: My custom Rx hump pack - 5/12/2008 4:50:26 AM   
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Posts: 1258
Joined: 12/28/2004
From: Lafayette, LA, USA
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quote:

ORIGINAL: nghtrdr

hmmm...
me likes!
great work man.
i use those same cells in my tx they last forever.
my question is about charging. if i make this pack (im not too bad at soldering) can i charge it using my Team Orion Avionics advanced flight charger (#ORI62200). what charge current should be used? can i still fast charge?
hxxp://www.teamorion-avionics.com/Advantage+Chargers/Advanced+Flight+Charger

thnx and again great work!
nightrider


You certainly can use that charger. I charge my pack at 2.2amps which doesn't heat up the pack too much and makes for a long-lasting pack. I never found it necessary to charge above 1c which would be 2.5amps in this case.

_____________________________

Savage X SS, FLM LCG TVP, Axial .28, 3-speed, 18/49
Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

(in reply to nghtrdr)
       Post #: 32

RE: My custom Rx hump pack - 5/12/2008 9:42:35 PM   
nghtrdr


 

Posts: 4
Joined: 1/19/2008
From: Toronto, ON, CANADA
Status: offline 		cool
thnx for the info!

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       Post #: 33

RE: My custom Rx hump pack - 5/13/2008 2:44:05 AM   
brett65



Posts: 715
Joined: 12/21/2007
From: Oklahoma City, OK, USA
Status: offline 		Hey, what do you mean by 1C charge? Is that coulombs or something? My duratrax charger is in amps, so when I saw you guys using C it threw me for a loop.

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       Post #: 34

RE: My custom Rx hump pack - 5/13/2008 3:07:58 AM   
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quote:

ORIGINAL: brett65

Hey, what do you mean by 1C charge? Is that coulombs or something? My duratrax charger is in amps, so when I saw you guys using C it threw me for a loop.


1C for a 2500mAh pack would be 2.5amps. 2C would be 5amps. See?

_____________________________

Savage X SS, FLM LCG TVP, Axial .28, 3-speed, 18/49
Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

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       Post #: 35

RE: My custom Rx hump pack - 5/13/2008 4:56:49 PM   
brett65



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quote:

ORIGINAL: go-to


quote:

ORIGINAL: brett65

Hey, what do you mean by 1C charge? Is that coulombs or something? My duratrax charger is in amps, so when I saw you guys using C it threw me for a loop.


1C for a 2500mAh pack would be 2.5amps. 2C would be 5amps. See?


Oh! It's dependent upon the battery! Seems like I learn something new everyday!

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       Post #: 36

RE: My custom Rx hump pack - 5/13/2008 5:45:12 PM   
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Posts: 1258
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From: Lafayette, LA, USA
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quote:

ORIGINAL: brett65

Oh! It's dependent upon the battery! Seems like I learn something new everyday!


Man you got that right...


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Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

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       Post #: 37

RE: My custom Rx hump pack - 5/14/2008 8:58:51 PM   
brett65



Posts: 715
Joined: 12/21/2007
From: Oklahoma City, OK, USA
Status: offline 		Thought I would share that I saw that Rayovac has rechargeable 2400mAh AA Nimh batteries now, 5 bucks for four and they will work in the energizer recharger or with an rc charger.

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       Post #: 38

RE: My custom Rx hump pack - 5/14/2008 9:39:51 PM   
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Posts: 1258
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From: Lafayette, LA, USA
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quote:

ORIGINAL: brett65

Thought I would share that I saw that Rayovac has rechargeable 2400mAh AA Nimh batteries now, 5 bucks for four and they will work in the energizer recharger or with an rc charger.


Thanks.

I've used them and the Duracell batteries with no success. They've both performed poorly for me. The Energizer has been the best I've found.

_____________________________

Savage X SS, FLM LCG TVP, Axial .28, 3-speed, 18/49
Savage 25, SureFire 32R RB Mods, 4-gears diff's, 2-speed, 18/47

(in reply to brett65)