Lipo repair

shoe goo for the win!

just got the james power pack, thanks man, looks real good. i might buy from you again! lol

[lincpimp]

Ok guys, sorry to have to do this but I am thru with lipo work.

Sitting at work today trying to get solder to stick to the end of an a123 cell and it hit me that this is a complete waste of my time. I have too much going on and just do not have the desire to fix lipos anymore.

It did not help that half of the people who sent me packs made it next to impossible for me to figure out who they were and what they wanted done to the packs, plus 500 pm's per pack is getting a little old too.

I have plenty of other stuff to keep myself busy, and it is way too hot to be laboring over a soldering iron for hours at a time.

Anyways, most of the packs I am fixing are zippy packs, and the build quality is all over the place. My advise is to buy better packs, or more than 1 zippy pack at a time and just throw away the problem packs.

I will finish what I have here, and will not be accepting anymore lipos. If you do send them to me I will not be fixing them...

Also I would just like to say that A123 cells SUCK. They are worse than nimh cells. Nothing sticks to damn weird al ends, the "resistance welded" metal tabs are not attached worth a crap either, so no chance soldering to them, as they fall off if you look at them funny. Plus they are difficult to package on a car, and are very heavy.

Sure they can handle abuse, but only an idiot abuses his batteries... Plus they don't hold voltage worth a crap either. Good rx batts if you lack the intelligence to run a ubec, or, god forbid, still like nitro.

End of rant, the a123 cells have just pissed me past off.

[gimpygolden]

UhhOhh... I'm guessin' those are my A123's pissin' you off.

I hope I wasn't one of those who got you mixxed up over whats wrong with the batt's,I thought I sent pretty good instructions.

Anyways Linc, don't worry about the Thunder Power packs. You can toss em' or use if you want.
Hopefully you can make it through the A123's and Zippy's with throwing anything through the window.

Take it easy and good luck!

[Metallover]

LINC!

BIG THANK YOU

for ALL You've done for us here at RCM

You Made a Great Run at it

And helped a lot of people out

Saved us thousands of dollars

We couldn't ask more out of you.

Good luck with your other things!

Everyone here at RCM appreciate all you did with lipos

Now go have a beer and enjoy yourself!

[lincpimp]

Originally Posted by gimpygolden

UhhOhh... I'm guessin' those are my A123's pissin' you off.

I hope I wasn't one of those who got you mixxed up over whats wrong with the batt's,I thought I sent pretty good instructions.

Anyways Linc, don't worry about the Thunder Power packs. You can toss em' or use if you want.
Hopefully you can make it through the A123's and Zippy's with throwing anything through the window.

Take it easy and good luck!

yeah your a123 cells are pissing me off. I have broken a hammer now, and my bench vice, when I get pissed it is not nice for anything I can get my hands on. You a123 cells are in a pile, I may finish them, or I may not. To be honest they are crap, and I would not contemplate using something this shitty in any of my rc vehicles. I have no idea how well the soldering will hold, but my worst soldering is 80 times better than the crap resistance welds they had stock.

Originally Posted by Metallover

LINC!

BIG THANK YOU

for ALL You've done for us here at RCM

You Made a Great Run at it

And helped a lot of people out

Saved us thousands of dollars

We couldn't ask more out of you.

Good luck with your other things!

Everyone here at RCM appreciate all you did with lipos

Now go have a beer and enjoy yourself!

Thanks for the kind words ML. Some sort of horse tranquilizer would be necessary to calm me down right now... I bet I am steaming from the ears...

To everyone else that has lipos here, the a/c in my work room is out, and I do not feel like trying to fix lipos while sweating. It is 110 in the room, and I have no desire to do anything in there.

I have a feeling it is time to take a break from rc. If something pisses me off this much it is not close to being enjoyable and I should stop.

[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.

[lincpimp]

Originally Posted by Fast5sRevo88

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

Maybe, unless I change my mind. I have a feeling cooler weather will help with that... It is just too damn hot to do anything here.