Lithium-Ion Batteries Submerged in Water ... how will they performed?

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Came across this video (about 2 minutes long) on YouTube! from Workshop Addict on testing lithium-ion batteries and their ability to function after getting "submerged" in a bucket of water.  I am sure glad they did the test, instead of me destroying my own batteries.

Companies Tested: DeWalt, EGO, Greenworks, Stihl and Echo

Immediate Result: EGO, Greenworks & Stihl worked right out of the water bucket

After Drying Out Batteries: EGO, Stihl & DeWalt worked normally

This video was "not intended" to prove whether or not these batteries are "waterproof," but more or less, if rain water got on the batteries, how will they perform in a "slightly" wet condition.
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David HD, Champion

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Posted 3 years ago

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Blue Angel, Champion

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I saw that a while back, a pretty good video!  It would have been cool if they tested them to "death", but I can understand there are politics with companies that likely need to be adhered to. :-)
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I'm not sure I understand what you mean as far as politics goes, for I see nothing wrong with testing a tool until it breaks if you have the money to replace it and you need to replace it.

This test really does not mean a whole lot to me because in my mind, the first thing I would do if the batteries got soaked is I would get as much water out of them as I can without displacing the internals too much, then I would let them dry out, not plug them straight into a tool and potentially short something out.
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Jennifer VandeWater, Community Manager

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Thanks for sharing this David.  We'd like to remind people "do not try this at home." :)
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I know that this is not something that you would want to do, but I can see times when knowing your battery will survive can be wanted.  For example, with the chainsaw, I know it would be nice to know that if you have harsh conditions where you need to use your chainsaw, like a storm condition (not lightning) that a bit or perhaps a lot of rain is not going to stop you.  That is one of the arguments I have heard why gas is better than EGO.  I think this test shows it is not necessarily the case
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Jack Johnson

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what about EGO 56volt battery under flood water for 3-4 days