Author Topic: Lipo Surgery (Read 4836 times)

Motorman · « **on:** November 16, 2015, 06:20:10 PM »

Had a 4s pack that wouldn't charge because of one bad cell. All the other cells were good so I took the pack apart. So easy, now I'm kicking myself for throwing those other battery packs away. Could have built another good battery pack. Anyway, started playing with the dead cell to see if i could revive it. Tried to bring it up to 3v on the NIMH setting but it keeps shutting off at about 1v. Why won't it keep charging, do I have to re-set NIMH limits or something?

Thanks,
MM

William DeMauro · « **Reply #1 on:** November 17, 2015, 02:27:45 PM »

Is your well being, your family's well being and your house worth the price of a lipo. If so just keep playing with these lipos like that!! Is it really worth it. Lipo fires are real, They happen!! One wrong move and poof. Look up lipo fires on You Tube. Treat them and respect them and you will enjoy many happy flights. Sorry if I sound harsh but I really don't want to hear about another avoidable tragedy on the internet, TV, or newspaper.

Fred Cronenwett · « **Reply #2 on:** November 17, 2015, 04:38:19 PM »

I have this battery with a wire that has been separated from the circuit board underneath the outer covering. I am not willing to try to fix even this. I charge in a fire proof safe and store them in a case with the lid shut and locked at all times.

This is our club website with a section on Lipo battery safety

https://lafayetteesquadrillecl.wordpress.com/lafayette-esquadrille-cl/cl-models/lipo-batteries-and-safety/

Fred

Motorman · « **Reply #3 on:** November 17, 2015, 05:07:14 PM »

Thanks for your concern guys but, all safety protocol is strictly adhered to at the turkey ranch.

Fred, easy fix, that loose red wire just connects to the main positive wire. They are both soldered to the same terminal inside. If you don't want to strip back the pack covering you could just remove some of the insulation on the red wire and solder it on then cover it with heat shrink.

MM

David Hoover · « **Reply #4 on:** November 18, 2015, 02:40:57 PM »

I have to admit it, when I see the topic name for this thread I immediately think of liposuction. Sorry, sometimes I just can't help myself.

Motorman · « **Reply #5 on:** November 18, 2015, 03:47:36 PM »

LOL, a few guys on here could use some of that.

MM

Joe Yau · « **Reply #6 on:** November 18, 2015, 06:36:07 PM »

Quote from: Motorman on November 16, 2015, 06:20:10 PM

Had a 4s pack that wouldn't charge because of one bad cell. All the other cells were good so I took the pack apart. So easy, now I'm kicking myself for throwing those other battery packs away. Could have built another good battery pack. Anyway, started playing with the dead cell to see if i could revive it. Tried to bring it up to 3v on the NIMH setting but it keeps shutting off at about 1v. Why won't it keep charging, do I have to re-set NIMH limits or something?

Thanks,
MM

Could you post a pic on the repair? like swapping the cells around etc.

Motorman · « **Reply #7 on:** November 18, 2015, 08:16:48 PM »

The inner 2 cells go through slots in the circuit board, the outer two just wrap around the edge. Can't put it back together until I get another good cell but there are videos on Utube. The cells are held together with double stick tape. Take lots of time pulling them apart or you'll bend the cell. This was a Hyperion, other brands may be different.

MM

Joe Yau · « **Reply #8 on:** November 18, 2015, 09:47:23 PM »

Thanks for posting the pics .

That's pretty interesting.. I didn't know they terminates through a circuit board.

Duke.Johnson · « **Reply #9 on:** November 19, 2015, 12:21:04 PM »

Quote from: Fred Cronenwett on November 17, 2015, 04:38:19 PM

I have this battery with a wire that has been separated from the circuit board underneath the outer covering. I am not willing to try to fix even this. I charge in a fire proof safe and store them in a case with the lid shut and locked at all times.

This is our club website with a section on Lipo battery safety

https://lafayetteesquadrillecl.wordpress.com/lafayette-esquadrille-cl/cl-models/lipo-batteries-and-safety/

Fred

Fred
This is easy to fix. We have the balance leads come off there often. It's just a quick solder joint.

Guilherme Souza · « **Reply #10 on:** March 24, 2016, 08:39:38 PM »

Dear Motormam

I need to do the same thing you did

But my battery is a Zippy compact battery and dont have the circuit board .

I dont know how to weld . I think this is aluminium

Someone could help me ?
I cant loose one battery , here in Brazil they are very very very very expensive
One cell is bad and I have one cel to change

Thank you

guil

Dwayne · « **Reply #11 on:** March 27, 2016, 03:44:47 PM »

Quote from: Fred Cronenwett on November 17, 2015, 04:38:19 PM

I have this battery with a wire that has been separated from the circuit board underneath the outer covering. I am not willing to try to fix even this. I charge in a fire proof safe and store them in a case with the lid shut and locked at all times.

This is our club website with a section on Lipo battery safety

https://lafayetteesquadrillecl.wordpress.com/lafayette-esquadrille-cl/cl-models/lipo-batteries-and-safety/

Fred

I've re soldered many of these wires on Zippy packs, very easy.

Guilherme Souza · « **Reply #12 on:** April 04, 2016, 04:48:53 PM »

I DID MY LIPO SURGERY WITH SUCESS !!!!!

I use a silver glue , yes a glue that conduct electricity.

I´m using my battery again with no problems

I know that is very difficult to do solder /weld in battery poles , because they are aluminium
This glue made this easy

Thank you

guil

Author Topic: Lipo Surgery (Read 4836 times)

Motorman

Lipo Surgery

William DeMauro

Re: Lipo Surgery

Fred Cronenwett

Re: Lipo Surgery

Motorman

Re: Lipo Surgery

David Hoover

Re: Lipo Surgery

Motorman

Re: Lipo Surgery

Joe Yau

Re: Lipo Surgery

Motorman

Re: Lipo Surgery

Joe Yau

Re: Lipo Surgery

Duke.Johnson

Re: Lipo Surgery

Guilherme Souza

Re: Lipo Surgery

Dwayne

Re: Lipo Surgery

Guilherme Souza

Re: Lipo Surgery