The vent hole should only open when the internal pressure inside the battery gets so high that the cell needs to vent gas. It shouldn’t allow water into the light.
I’d run it though a couple of full charge/discharge cycles, and measure its capacity to make sure that it hasn’t been damaged. Then leave it for a couple of weeks, and make sure it doesn’t self-discharge much, or show signs of any leaks. If it checks out okay, go ahead and use it.
And don’t lose your charger out of sight!
I would toss it, for peace of mind, eneloop are so cheap.
I would bury the AA in rice for a day or 2 and then leave it alone for a few days and then charge discharge etc just as Walkintothelight described.
I done this to a AAA Eneloop its still okay. I was hesitant do use it but i left it for a weeks and it held charge fine.
I’d never toss something that I could learn from - I’d be letting it dry thoroughly for a few days (the rice method is fine, but the humidity here right now is 20%) and then putting it on the charger. Sure, Eneloops are cheap but science comes first! 
Science test to see how fast the firefighters can get there? lol 
I don’t think NiMH can catch fire. If this were lithium-ion batteries, yeah I’d be more concerned.
Here’s a site that tested six common household materials for their ablity to dry out soaked electronics:
It should be noted that while getting water out of electronics is well and good, if corrosion has already happened, drying them out may not help. And corrosion can happen FAST, especially if the device is on when it gets wet. I’m talking within seconds of getting wet for certain components.
is the AA eneloop clean ?
It is now…
After the thorough cleaning did it retain any charge?? Just curious….
Holy cow! I had no idea Coke could destroy a computer so fast! :confounded:
Wellp, a few things…
Perhaps he should look up “electrolysis” when he talks about “corrosion”.
Coke has phosphoric acid. Perhaps he should look up “naval jelly”. It’s used to clean crapped-up objects down to the base metal, dissolving nasties along the way. It also has phosphoric acid.
Also, he’s running 18V through that board, vs just dropping it in a deenergised board. Back to “electrolysis”.
Last, I’ve heard of people dropping phones, etc., into puddles, toilets, etc., but not into buckets of coke. Back to phosphoric acid (vs plain water).
It’s like he’s complaining how badly oven-mitts can get burned on a stovetop, but then turning on all the burners and dumping gasoline all over the stove. “Wow! Lookit all that damage to the mitts in just a few seconds!”
Wow!! . 
. Very interesting video kuzuna, thanks for sharing it. 
.
I’ll say it again Lightbringer, you have a great way with words!! . Your cracking me up with your analysis. An accurate analysis too I might add. 
All true.
However, the video did have a point:
When people accidentally drip Coke into their computer, it probably IS powered on. And it sounds like the damage can occur in just seconds with an energized board.
/\ … … That too.
I just get really tired of all the disgustingly dishonest clickbait on yootoob.
It’s almost as bad as the “10 things in your kitchen that can kill you! News at 11…”. (Carving knife, meat-cleaver, skewers… uhh, yeah, and…???)
Or the “road-rage” flicks showing some very-well-endowed chick in a spraypainted-on sweater… who’s nowhere to be found in the entire vid! Wtf??
Wellp, I might accidentally drip something onto/into my keyboard, but I’d have to be actually physically climbing on the desk to drip something into my computer.
And anyone who slovenly drips cokola into a phone either has to live in a sty and drips everything everywhere, or just plain deserves the results.
I’m having a really hard time finding sympathy for either.