Lipo Repair (Short Circuited)

 ****DISCLAIMER****

WHEN WORKING WITH LITHIUM POLYMER (LIPO) BATTERIES, SAFETY IS OF GREAT IMPORTANCE. THIS MUST BE DONE WITH GREAT CARE AND ON A NON-CONDUCTAVE WORK SURFACE. YOU MUST WARE PROPER SAFETY EQUIPMENT INCLUDING GOGGLES AND GLOVES. I CANNOT BE HELD RESPONSIBLE FOR ANY INJURIES CAUSED BY ATTEMT OF THIS PROCEDURE.

While working on a project, I accidentally shorted out a 2 cell Turnigy 1000mah lipo. Rather than buying a new one, I was curious to see if I could repair it. It turned out that it was a very simple fix, a broken wire connecting cells, due to the short. I thought that others could benefit from learning how I fixied mine, because shorted lipo's are a common problem on smaller C rate packs. Although this was done on a 2s Turnigy 1000mah, it works with almost every other configuration of lipo's.

Step One: Ready the Tools

To fix your lipo you will need an X-acto knif, a soldering iron, and safety gear (googles).

Step Two: Cut the Outer Casing

Place your lipo on a non-conductive surfact

Using an X-Acto knife, cut the Lipo's outer casing from the back. Make sure to place the knife under the casing, with the blade facing upwards. Apply upwards pressure.

Step Three: Remove the Lipo Pack

Step Four:

Remove the white protective plastic slip

Step Five: Find the Problem/Wire Break

In my case, the blue wire, cell #2, had a broken contact soldered to it. This was caused by my short circuit.Step Six: Repair

Use a soldering iron to repair the broken contact(s)Step Seven: Cosmetics

First, replace the white protective slip. 

Second, re-wrap the pack with the outside casing. In my case, I used a strip of velcro to hold it together on the back because I secure the Lipo to my plane with velcro anyway.