Lipo battery balance plug can sometimes be damaged by spinning propellers in flight. it’s extremely unsafe to use this LiPo with a broken balance lead as it can short itself easily and cause fire. In this article I will show you how I fixed mine.
Damaged Balance Lead? Don’t Panic!
If you have a damaged balance plug, first check the voltage of all cell and make sure they are all healthy. If they are you don’t have to buy a new LiPo battery, and you can simply just fix the balance plug.
The best solution is to replace the balance plug, but if the plug isn’t damaged badly, you can attempt to fix it with Epoxy Glue. For some really badly damaged ones where 4 out of 5 pins were exposed, I still managed to fix them this way. Of course this is not recommended, I only do it to keep me going for a few more charges before the delivery of my new plugs.
Buy and Replace Balance Plug
Whenever you can, replace the broken balance plug with a new one.
Where to buy
It’s very straight forward, the key is to replace ONLY 1 WIRE at a time. This prevents the wires from touching each other and causing shorts.
And she’s as good as new :D Always buy spare balance plugs with new LiPo batteries !
Repair LiPo Balance Plug using Epoxy Glue
The Epoxy I used is the 15-minute one. Mixi them well, and leave it for 5 to 10 mins to get a bit more sticky. It’s harder to work with when it’s runny.
I have lots of these spare jumper wire pins laying around which I saved from previous projects. Before applying the glue, I plug a jumper pin in where the glue is going to go. This stops the glue from going into the pin hole and affects conductivity later. Be aware to make sure there is no way the metal part of your your jumper pins can touch each other, which could cause short circuit and even fire!
Once applied the Epoxy, leave it to solidify. Just before it’s completely dried, you should still be able to modify the shape of the glue with your finger tip.
And it’s working for another day! Of course I would not recommend this method as it’s quite risky, so do it at your own risk!
Balance Plug Protector
I put some Lipo balance plug saver on, they can take some beating, but don’t always stop it from damaging your plug. It’s good to have anyway.
Where to buy: