Lipo repair

[gimpygolden]

Geez these guys make it look so easy.
http://www.youtube.com/watch?v=vZpYq...om=PL&index=46

Sorry for gettin you into this man.
If you don't want to finish them I'll understand. Just ship em' back I'll figure something out.

[lincpimp]

Originally Posted by gimpygolden

Geez these guys make it look so easy.
http://www.youtube.com/watch?v=vZpYq...om=PL&index=46

Sorry for gettin you into this man.
If you don't want to finish them I'll understand. Just ship em' back I'll figure something out.

yeah, it does look easy, I wonder what type of flux and solder he is using...

I have made dozens of nimh packs, and am not new to the process by any means. I guess I will give it another try, but plan to have some a/c running by then. 110 degrees and my concentration do not go well together.

[gimpygolden]

Apparently the cells ends have a coating on them that allows regular 60/40 to stick so you just want to scuff them with the Scotchbrit pads and not hit them with a dremel like you might with Ni-xx cells.
On a quick search I found this for flux.
https://www.tanicpacks.com/product_i...de75ebffe1db49
if you want to order some up just bill me for it and your welcome to whatever is left.

[sikeston34m]

I've used regular 60/40 Rosin Core Solder on all kinds of cylindrical cells.

I use the Rosin Core .032 diameter that Radio Shack sells.

A good scuffing really helps things hold and the solder flow. It does take a really hot soldering iron though. A small iron won't work.

Just an update Linc.

I appreciate your advice. I received the Zinc Core Solder and flux, and successfully built 2 - 4S Flightpower 3700mah 25C Packs from the one huge 8S pack.

Just ran them in the Revo yesterday and am very happy. Got a great deal that time.

[gimpygolden]

I also saw that zinc core and amber zinc flux at
http://www.cheapbatterypacks.com/?sid=1635236&pgid=bldg
scroll down its there
might work well for the 123's

[gimpygolden]

this might help to Linc.
from Hyperion's website
http://media.hyperion.hk/dn/a123/pac...23packassy.pdf

Does this mean i have to learn how to do my own battery work?

[lincpimp]

Originally Posted by gimpygolden

I also saw that zinc core and amber zinc flux at
http://www.cheapbatterypacks.com/?sid=1635236&pgid=bldg
scroll down its there
might work well for the 123's

I tried that,as that is what I use on the al tabs on enerland cells. No chance of me getting the cell hot enough to melt that zinc solder.

I have successfully made 2 of the 5 cell a123 packs now... And am working on the rest. The neg side is not giving me much issue, it is the pos side. The guy in the vid must have a 10000 watt iron to do it that fast. I can barely get the end of the cell warm enough to melt solder... and I do not want to heat the entire cell to liquid hot...

I doubt the packs in the vid could hold up to a screwdriver prying the tabs up, that is my test when I make packs with bars.

[gimpygolden]

Originally Posted by lincpimp

I tried that,as that is what I use on the al tabs on enerland cells. No chance of me getting the cell hot enough to melt that zinc solder.

I have successfully made 2 of the 5 cell a123 packs now... And am working on the rest. The neg side is not giving me much issue, it is the pos side. The guy in the vid must have a 10000 watt iron to do it that fast. I can barely get the end of the cell warm enough to melt solder... and I do not want to heat the entire cell to liquid hot...

I doubt the packs in the vid could hold up to a screwdriver prying the tabs up, that is my test when I make packs with bars.

The large tip is what really helps to as it "stores" more heat energy