Soldering 18650 batteries

[AK]

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

 

[Helmut Wabnig]

On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com>
wrote:

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

You should go hot and fast to avoid ruining the battery.

w.

 

[default]

On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com>
wrote:

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

I thought the accepted procedure was to spot weld nickel strips to the
battery terminals?

 

[AK]

On Thursday, May 9, 2019 at 11:12:53 AM UTC-5, default wrote:

On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com
wrote:

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

I thought the accepted procedure was to spot weld nickel strips to the
battery terminals?

I have no spot welder.

 

[Ralph Mowery]

In article <51af9330-9993-4928-98ce-b6bf91352883@googlegroups.com>,
scientist77017@gmail.com says...

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

I thought the accepted procedure was to spot weld nickel strips to the
battery terminals?

I have no spot welder.

You should look for some batteries that alreaady have the strips on
them. It is difficult to solder to batteries with most soldering
equipment. If you do try it, you need a soldering iron with lots of
mass on the tip so you can do it very fast.

 

[default]

On Thu, 9 May 2019 09:14:00 -0700 (PDT), AK <scientist77017@gmail.com>
wrote:

On Thursday, May 9, 2019 at 11:12:53 AM UTC-5, default wrote:
On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com
wrote:

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

I thought the accepted procedure was to spot weld nickel strips to the
battery terminals?

I have no spot welder.

There are several tutorials on line from DIY ers on how to build one
from a MOT (Microwave Oven Transformer). These days they use car
batteries with pulsing current controllers or capacitor banks that
discharge to produce the high spike of current necessary. Youtube
probably has some homebrew solutions.

A lot of work just to weld a few tabs, but if you were thinking of
building your own electric vehicle it would be worthwhile.

But like someone has already said, soldering to batteries may be
difficult or impossible since a lot of them use stainless steel
jackets that don't take solder very well. You might need a high power
soldering iron with a hefty tip and some very active flux to solder to
them.

Anyhow, you can hurt yourself trying to solder to a battery especially
a lithium ion type.

 

[Charlie+]

On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com>
wrote as underneath :

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

The trick I use is to grind the plated surface 2mm-3mm patch (diamond
dremel etc) and wet that with flux solder very fast (about 1s @ 350C).
put the cell aside for a few mins till stone cold again. Then go back
and fast solder the wire. You run into major problems with rech. button
cells they seem to be made of some very high chrome alloy which is
difficult to get anywhere with (except spot welding!). C+

 

[AK]

On Thursday, May 9, 2019 at 7:49:04 PM UTC-5, default wrote:

On Thu, 9 May 2019 09:14:00 -0700 (PDT), AK <scientist77017@gmail.com
wrote:

On Thursday, May 9, 2019 at 11:12:53 AM UTC-5, default wrote:
On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK <scientist77017@gmail.com
wrote:

I was thinking of replacing the 18650s in my Dewalt battery when they go bad.

When using tab wire, what temp do I set my iron for?

I read that you should go hot and fast to avoid ruining the battery.

Andy

I thought the accepted procedure was to spot weld nickel strips to the
battery terminals?

I have no spot welder.

There are several tutorials on line from DIY ers on how to build one
from a MOT (Microwave Oven Transformer). These days they use car
batteries with pulsing current controllers or capacitor banks that
discharge to produce the high spike of current necessary. Youtube
probably has some homebrew solutions.

A lot of work just to weld a few tabs, but if you were thinking of
building your own electric vehicle it would be worthwhile.

But like someone has already said, soldering to batteries may be
difficult or impossible since a lot of them use stainless steel
jackets that don't take solder very well. You might need a high power
soldering iron with a hefty tip and some very active flux to solder to
them.

Anyhow, you can hurt yourself trying to solder to a battery especially
a lithium ion type.

I will probably get the batteries with the tabs. Though they cost more.

http://www.megabatteries.com/item_details2.asp?id=14175

Andy