opinions on damage to lithium battery drained by short

[McDog]

I have a battery tender 480cca lithium battery I have ran for a few years on total loss with no issues ever. Last ride it was on a newly setup tl system and somehow was shorting into the mounting bolt on my carbon hull. It charred the hull and drained to the point of not starting the ski which it has never done before. It recharged and works fine but the case is the tiniest bit swollen out round on the bottom.

To those who know these batteries well:

How does this look for the future of this battery? Is it toast even though it recharged and seems to work? I haven't really put it to the test other than a short ride because I tore the ski down for a rebuild right after.

 

[rowsto]

I've completely discharged the same battery on a few different units. Some were fine, others wouldn't even take a charge after. None of which swelled at all. Jump on YouTube and search for lithium battery explosion and then decide if you want a swollen damaged lithium battery inside your ski. A new battery is cheap compared to the alternative.

 

[McDog]

The swelling is so, so minor that most wouldn't notice it. Just barely on the bottom. Still sits completely flat. I may even have just psyched myself into believing it because I'm nervous about what may happen. From what I've read usually swelling is caused by heat from overcharging. I'm guessing the rapid discharge caused some heat too. It was warm, but not burning hot. I totally get what you are saying though. I just wanted some experienced opinions before I trashed a good battery.

 

[orangefinger]

carbon ....conductor

any electrics have to be insulated from your hull

 

[McDog]

carbon ....conductor

any electrics have to be insulated from your hull

True but never issue before. There still has to be a short somewhere for it to be conducting from the live wire.

 

[restosud]

get a new one.if it really has swollen,you don't want it in your boat!

 

[Big Kahuna]

I learned the hard way on Chris's old freak (Mark Muphy has it now), battery was mounted in the back corner. Was putting battery cable on or off, ratchet touched the side of the hull but did not spark. But we kept seeing smoke. could not figure it out until it finally arched. Never knew carbon was conductive.

 

[orangefinger]

either way battery is trash , we had a ski catch on fore once, since then I always remove battery completely for transport and for charging disconnected from circuit....'' I might be paranoid but once u see that ski on fire things change

 

[McDog]

I've always removed the battery when not in use too. I'm paranoid about my ski burning.

 

[Iconicsuperpoop]

I learned carbon was conductive while doing a sytem in Mike Tyson's lamborghini. All custom carbon panels, with power and ground distribution mounted directly to it. Took me a minute to figure why the main fuse kept instantly blowing. Sucked having to take it apart and make insulators for everything. Use the battery in a couch.... who cares they go poof.