Attach Wires to NMH Batteries Without Soldering

Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John

 

[William Sommerwerck]

Welding.

A Batteries Plus store will do it for a small charge -- or sometimes free if
you buy enough stuff. The store near Southcenter fixed the broken weld in my
B&D battery pack.

 

[Fred]

<jaugustine@verizon.net> wrote:

Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John

Solder your wires to contact pads. Coat the positive and negative terminals
with some sort of protective anti-galvanic grease. Use electrical tape to
adhere pads by wrapping the battery lengthwise. Make a C shaped lengthwise
cover made of sheet metal for the battery. Then use a couple of tie wraps
to squeeze the C shaped cover tightly onto the contacts.

 

[N_Cook]

<jaugustine@verizon.net> wrote in message
news:t626d8pjn0trc3iujgsrch3sjdlrioiq9u@4ax.com...

Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John

Whats wrong with soldereing? Seriously roughen the metal with coarse sand
paper then a blob of flux. Then a soldering iron greater than 50W and
locally heat enough to get a spot of solder wetted over the roughened area,
don't dally and heat the whole cell. Then at your leisure and ordinary iron
locally melt a bit of your solder blob and meld with some new solder and the
wire. If its for >5 or 10A use then probably not advisable

practise on an old cell first , perhaps

 

[hr(bob) hofmann@att.net]

On Dec 20, 6:58 am, jaugust...@verizon.net wrote:

Hi,
      Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity?   Note: I have several new "C" NMH batteries.

      I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

                Thank You in advance, John

Do what Mr. Cook suggests, it is what I frequently do.

 

[N_Cook]

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:3bb14cfc-0c6f-45b7-8a56-19d65e060f37@10g2000yqo.googlegroups.com...
On Dec 20, 6:58 am, jaugust...@verizon.net wrote:

Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John

Do what Mr. Cook suggests, it is what I frequently do.

+++

I must have done it a few dozen times , admittedly NiCads, but no in
service problems emerged over time scale of a few years anyway.

 

[Bob E.]

Do what Mr. Cook suggests, it is what I frequently do.

I second this. I've done this several times with "non-replaceable" cells in
shavers, etc. and have had no failures related to quick-soldering, only the
usual slow degradation over time of the cell chemistry.

Tin the wire, emery-paper the terminals, clean, drop of flux, quick solder.

 

[Ian Malcolm]

"N_Cook" <diverse@tcp.co.uk> wrote in news:kavh8v$mma$1@dont-email.me:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:3bb14cfc-0c6f-45b7-8a56-19d65e060f37@10g2000yqo.googlegroups.com..
. On Dec 20, 6:58 am, jaugust...@verizon.net wrote:
Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm
the batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John

Do what Mr. Cook suggests, it is what I frequently do.

+++

I must have done it a few dozen times , admittedly NiCads, but no in
service problems emerged over time scale of a few years anyway.

Me too. The worry is: that you might melt some plastic internal seperator

or similar. NiMH batteries can be stored at -20 deg C so you can put the
cells in the freezer beforehand to give yourself a bit more safety margin,
but if you are any good at soldering that really isn't required. Whatever
you do, don't piss about with a low wattage iron or a fine tip. This is a
perfect job for a 100W Weller soldering gun or a catalytic butane gas iron.

I usually roughen up the contact with a fiberglass brush pencil. Its
absolutely essential to break through any Nickel plating that may be there.

This is safe enough for NiCd/NiMH but *NOT* reccomended for LiPO cells as
you risk turning them into an incendary devicee. []

--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk
[at]=@, [dash]=- & [dot]=. *Warning* HTML & >32K emails --> NUL

 

[mike]

On 12/20/2012 6:42 AM, N_Cook wrote:

jaugustine@verizon.net> wrote in message
news:t626d8pjn0trc3iujgsrch3sjdlrioiq9u@4ax.com...
Hi,
Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity? Note: I have several new "C" NMH batteries.

I know about battery holders, but there isn't enough space for a
multi-cell battery holder in the project I am working on.

Thank You in advance, John



Whats wrong with soldereing? Seriously roughen the metal with coarse sand
paper then a blob of flux. Then a soldering iron greater than 50W and
locally heat enough to get a spot of solder wetted over the roughened area,
don't dally and heat the whole cell. Then at your leisure and ordinary iron
locally melt a bit of your solder blob and meld with some new solder and the
wire. If its for>5 or 10A use then probably not advisable

practise on an old cell first , perhaps



Soldering directly to cells is a bad idea.

It's like driving above the speed limit. You won't have any problem finding
people who'll swear that they do it all the time. They never get caught...
until they do.
Go down to traffic court and you'll see the other side of the coin.

I've soldered a lot of NiCd's back in the day. It mostly worked.
Except for the few that exploded under charge. And the few that
had high self-discharge rates.

And if you're fixing a laptop battery pack, there really isn't room
for that solder joint.

You need to find the sweet spot of time and temperature.
I found that spot with a DIY battery tab welder.
Haven't had any battery problems since.

If you insist on soldering batteries, wear safety glasses.
Clamp them down so they
won't hit you in the face when they explode. Also helps to
have them in a fixed position. You don't have time to fiddle
with the cells and the wire and the solder and the iron
with only two hands. The separator melts before you get
it all lined up.

Did I mention that soldering directly to cells is a bad idea.

 

[Andy]

On Dec 20, 12:38 pm, Bob E. <besp...@invalid.tv> wrote:

Do what Mr. Cook suggests, it is what I frequently do.

I second this. I've done this several times with "non-replaceable" cells in
shavers, etc. and have had no failures related to quick-soldering, only the
usual slow degradation over time of the cell chemistry.

Tin the wire, emery-paper the terminals, clean, drop of flux, quick solder.

Also, use fairly small wire for the attachment and put a tiny blob
of solder on the wire to be attached... Then a quick touch with
the iron will melt both blobs together. The secret is minimum heat
and time, but it is easy to do...... and be sure to use the
emery paper on the batt terminals first....

 

[Phil Allison]

<jaugustine@verizon.net>

Do you know a technique to safely attach wires to NMH batteries
("C" cells) without soldering the wires to the battery which may harm the
batteries integrity?

** The industry standard method is a special form of spot welding using two,
close spaced electrodes.

You can get NiMH cells with welded, metal tags already attached - and solder
these.

Otherwise use ordinary soldering - like thousands do.

For battery packs subjected to high discharge rates, soldering produces
reliable, low resistance connections and spot welding does not.


..... Phil

 

[William Sommerwerck]

You can get NiMH cells with welded, metal tags already
attached -- and solder these.

But they're still welded -- which you condemn for high-drain apps:

"For battery packs subjected to high discharge rates, soldering produces
reliable, low resistance connections and spot welding does not."

 

[Phil Allison]

"William Sommerwanker = Utter Fuckwit"

You can get NiMH cells with welded, metal tags already
attached -- and solder these.

But they're still welded -- which you condemn for high-drain apps:

** Your bullshit words - not mine arsehole.


BTW:

Got any idea what is the OP's app is ??

Got any idea why you fat head is permanently stuck up your arse ??

Rhetorical question -

everyone already knows the answer to that, except you.

You stupid pile a ASD fucked shit.

 

[isw]

In article
<0001HW.CCF89B230185299BB051B9BF@news.eternal-september.org>,
Bob E. <bespoke@invalid.tv> wrote:

Do what Mr. Cook suggests, it is what I frequently do.

I second this. I've done this several times with "non-replaceable" cells in
shavers, etc. and have had no failures related to quick-soldering, only the
usual slow degradation over time of the cell chemistry.

Tin the wire, emery-paper the terminals, clean, drop of flux, quick solder.

Sometimes it helps to tin the cell using a more aggressive flux than the
usual stuff that comes in the solder. Then you can use regular solder to
attach the wire.

Isaac

 

On Dec 21, 6:00 am, "Phil Allison" <phi...@tpg.com.au> wrote:

"William Sommerwanker =  Utter Fuckwit"



You can get NiMH cells with welded, metal tags already
attached -- and solder these.

But they're still welded -- which you condemn for high-drain apps:

**  Your bullshit words  -  not mine arsehole.

BTW:

Got any idea what is the OP's app is  ??

Got any idea why you fat head is permanently stuck up your arse  ??

Rhetorical question -

everyone already knows the answer to that,  except you.

You stupid pile a ASD fucked shit.

No Phil, they were YOUR words from YOUR previous post dated December
20 at 7:41 PM

"For battery packs subjected to high discharge rates, soldering
produces
reliable, low resistance connections and spot welding does not.

..... Phil"

Look in the mirror when calling names because they apply to you as
well.

Merry Christmas

G˛

 

[Phil Allison]

<stratus46@yahoo.com>
"William Sommerwanker = Utter Fuckwit"

You can get NiMH cells with welded, metal tags already
attached -- and solder these.

But they're still welded -- which you condemn for high-drain apps:

** Your bullshit words - not mine arsehole.

BTW:

Got any idea what is the OP's app is ??

Got any idea why you fat head is permanently stuck up your arse ??

Rhetorical question -

everyone already knows the answer to that, except you.

You stupid pile a ASD fucked shit.

No Phil, they were YOUR words ...


** Anyone alive can see they were not.

" For battery packs subjected to high discharge rates, soldering
produces reliable, low resistance connections and spot welding does not."


** Different words & with a different meaning.

Now go fuck your mother, you pile of putrid trolling garbage.

 

[William Sommerwerck]

"For battery packs subjected to high discharge rates, soldering
produces reliable, low resistance connections and spot welding does not."

** Different words & with a different meaning.

Ya coulda fooled me.

"When I use a word," Humpty Dumpty said, in rather a scornful tone, "it means
just what I choose it to mean — neither more nor less."

"The question is," said Alice, "whether you can make words mean so many
different things."

"The question is," said Humpty Dumpty, "which is to be master — that's all."

 

On Thu, 20 Dec 2012 13:50:40 -0800 (PST), in sci.electronics.repair you wrote:

On Dec 20, 12:38 pm, Bob E. <besp...@invalid.tv> wrote:
Do what Mr. Cook suggests, it is what I frequently do.

I second this. I've done this several times with "non-replaceable" cells in
shavers, etc. and have had no failures related to quick-soldering, only the
usual slow degradation over time of the cell chemistry.

Tin the wire, emery-paper the terminals, clean, drop of flux, quick solder.

Also, use fairly small wire for the attachment and put a tiny blob
of solder on the wire to be attached... Then a quick touch with
the iron will melt both blobs together. The secret is minimum heat
and time, but it is easy to do...... and be sure to use the
emery paper on the batt terminals first....

Hi Andy,

I decided to do what the majority of respondents recommended.

I have a 200/260W Weller solder gun and when I gave it some thought,
when someone spot welds a tab onto the battery, it creates a momentary
hot spot on the battery. The Weller gun can't to worse than a spot weld as
long as the time is short and proper preparation is made.

By golly, I had no trouble at all and the results turned out great!

Thanks to everyone and Merry Christmas, John

 

[William Sommerwerck]

I have a 200/260W Weller solder gun and when I gave it some thought,
when someone spot welds a tab onto the battery, it creates a momentary
hot spot on the battery. The Weller gun can't to worse than a spot weld
as long as the time is short and proper preparation is made.

Oh, yes it can. A spot weld takes a fraction of a second, and the heat appears
over a small area.

By golly, I had no trouble at all and the results turned out great!

I hope so. I've seen connections of this sort fail * with the solder blob
simply falling off the battery.

* as do spot welds, of course

 

[Michael A. Terrell]

stratus46@yahoo.com wrote:

On Dec 21, 6:00 am, "Phil Allison" <phi...@tpg.com.au> wrote:
"William Sommerwanker = Utter Fuckwit"



You can get NiMH cells with welded, metal tags already
attached -- and solder these.

But they're still welded -- which you condemn for high-drain apps:

** Your bullshit words - not mine arsehole.

BTW:

Got any idea what is the OP's app is ??

Got any idea why you fat head is permanently stuck up your arse ??

Rhetorical question -

everyone already knows the answer to that, except you.

You stupid pile a ASD fucked shit.

No Phil, they were YOUR words from YOUR previous post dated December
20 at 7:41 PM

"For battery packs subjected to high discharge rates, soldering
produces
reliable, low resistance connections and spot welding does not.

.... Phil"

Look in the mirror when calling names because they apply to you as
well.

Phil will never admit to his mistakes, which are fairly common
occurrences.