GensAce Lipos got wet. Can I open and reseal them?

[Snafujg]

So I had 2 GensAce 3S Lipos in my Spartan when it flipped it and got the buoy syndrome. Everything is the hall was underwater for about 5 seconds before I got to it, including my batteries. I immediately disconnected them and have been letting them sit for 5 days now. I can still see moisture thru the shrink wrap on them.

I would like to open up the packs to completely dry them before I try to charge them. But I don't know how to seal them back up. Can you seal them with electrical tape? Do you need to shrink wrap them? Electrical tape with spray on over that? If I do open them up I want to make them as waterproof as possible when I close them back up.

[LarrysDrifter]

Charge them and run them. Water doesn't hurt lipos. It's all superstition. They don't need to be dry. Been there, done that wet lipo crap numerous times.

[LarrysDrifter]

Do you have a link to where GensAce lipos can be bought?

[Snafujg]

Here's where we got ours from:

http://www.hobbypartz.com/98p-30c-5300-3s1p.html

Got them in a week from order date.

[d.a.v.e]

I had the water hose break on my motor collar yesterday, filled the boat up with water before I got it all the way back in. I just poured the water out and put it back in the water. All was well.

[Darin Jordan]

It's going to depend on how they are assembled.

For my Thunder Power packs, I have been recommended NOT to take them apart, as it will "destroy" the cells. They are assembled with double-back tape between the cells and when you pull them apart, you disturb the internals of the cell, increasing resistance "by as much as 40%".

If you are talking about just removing the heat shrink, then I would do that. Take off the outter shrink, stand them on their side in a warm area so the moisture can drain out the bottom, or evaporate out the top. Then, put new shrink on, being careful not to heat them too much.

That's how I've done it and it seems to work OK....

Hope this helps.

[skellyo]

May seem silly, but put them in a big bowl of dry rice. The rice will work as a dessicant and absorbs any surrounding moisture. Never tried it on lipos, but I've removed moisture from inside a watch face using that method before.

[Fast Guy]

I have Gens Ace batteries also and when mine get wet (doesn't hurt them) I use compressed air and blow around where the main and balance wires exit the shrink wrap. This dries them out fairly well. OffShore sells the clear shrink if you want to go that route: I used to try to seal them with shoe goo but water still got inside and was almost impossible to get out without removing the shrink.

[bbosncali]

I had my gen ace batteries submerged for almost 5mins let them dry out for a couple days charged them back up and they went. As long they are not swelling you should be fine

[JimClark]

Does anyone put conformal coating on the tabs and solder joints to keep them from oxidizing?

[Snafujg]

Thought I would give an update to this post. The batts have been fine since they were submerged and dried. The bag of rice trick works well. After my initial BUOY syndrome, I actually had one come out in a flip and was submerged for about 2 minutes before I found it. Put it in a bag of rice and it was all dried out the next day.

[skellyo]

Thought I would give an update to this post. The batts have been fine since they were submerged and dried. The bag of rice trick works well. After my initial BUOY syndrome, I actually had one come out in a flip and was submerged for about 2 minutes before I found it. Put it in a bag of rice and it was all dried out the next day.

Glad the rice worked for drying out the lipos. Funny how something that sounds so absurd works so well.

[sailr]

A friend of mine sunk his boat and by the time he got a diver to get it back, more than two hours had passed. The hatch had blown off so everything got wet. The batteries were just fine. Didn't bother them at all. Water won't hurt the motor either. It's the receiver, ESC, and some servos you have to worry about.