Turnigy LiFEPO4 packs

[himalaya]

Originally Posted by lutach

How many have tested water for electrical conductivity? If one has you know the answer. Like my man Bruce Lee once said, "Be like water". I got a few lipos wet and they're still going strong.

I have experienced some issues with lipo+water. Green stain apears on the balance tab, it starts from one end and then as time goes on spreads to the other end, a very clear electro-chemical effect. Those stain will cause unstable cell voltage readings thus balance result. I have(have to )replaced two balance tabs of my 10 6S packs.

Most LiPos are shrink wrapped, once water gets into the pack it can hardly find its way out. When I opened one of my failed pack I was shocked how bad it smells and what power a tiny drop of water DOES have. At many dots the metal part of the aluminum-plastic film are gone, making the cells leak. You know the leaked electro-liquid is conductive and corrosive, making more metal film disapear, and finally make the whole pack fail. As a temperary solution I made round whole windows on my survived packs' wrap film to help water out(helps it in too, but drys much faster)

[lutach]

Originally Posted by himalaya

I have experienced some issues with lipo+water. Green stain apears on the balance tab, it starts from one end and then as time goes on spreads to the other end, a very clear electro-chemical effect. Those stain will cause unstable cell voltage readings thus balance result. I have(have to )replaced two balance tabs of my 10 6S packs.

Most LiPos are shrink wrapped, once water gets into the pack it can hardly find its way out. When I opened one of my failed pack I was shocked how bad it smells and what power a tiny drop of water DOES have. At many dots the metal part of the aluminum-plastic film are gone, making the cells leak. You know the leaked electro-liquid is conductive and corrosive, making more metal film disapear, and finally make the whole pack fail. As a temperary solution I made round whole windows on my survived packs' wrap film to help water out(helps it in too, but drys much faster)

You guys don't spray a little Duralube (I love this stuff) or WD40 once in a while? I do that from time to time on my balancing connectors as I don't use them a lot. I have checked most of the lipos that did get wet and I haven't found any of the problems you mentioned. I do have most of them wrapped in fiberglass reinforced tape and others have openings on the side of them.