Samsung has had battery troubles in the past. Their infamous Galaxy Note 7 fiasco doesn't need any introduction. But it looks like Samsung may not have left all of its battery problems completely in the past. They have found themselves into this battery mess yet again, and it may not be as serious as before, but it does need your attention and what you can do to avoid it.
So Mrwhosetheboss and some other content creators have noticed that batteries in Samsung phones are swelling up. And it's not happening to one or two phones, but multiple Samsung phones. Arun has hundreds of phones stored in identical conditions from different brands and interestingly only Samsung phones are affected by this problem.
The batteries in all these phones expanded to the point where the rear glass panel separated itself from the rest of the chassis.
First of all, if you are worried that your Samsung phone might do the same, then please don't. There's no need to be worried about it because this is not a widespread issue.
I can assure you, you're not going to experience the same battery swelling in your phone. Because this is only affecting a small number of units that are stored without use for years. If you are using the phone even for a few times a year, you have absolutely no need to worry about this thing.
Battery swelling isn't a new problem. As lithium-ion batteries age, the chemical reaction between the ions can produce gas, and thus the battery swells.
And this isn't unique to Samsung either. Every OEM's phone including the iPhones experiences this on a consistent basis. But compared to others, Samsung phones have a little higher rate of swelling. And I guess that has to do with the battery design that Samsung is using because all lithium-ion batteries are not equal. The way a rechargeable battery is designed plays a role here. So what you can do to avoid this?
First of all, if you got a new phone and plan to store the old one without using it for years, Charge it at 50% and store it. Because leaving it at 0% and even 100% is not a good idea as the electrolyte in batteries can decompose at a faster rate producing gas. Second, just turn the phone on at least once a year to keep the battery happy. These batteries tend to discharge gradually even when the phone is off, so a few years of sitting unused can easily leave a device at 0% which as I've said decomposes the electrolytes faster.
Now, what Samsung needs to do is tweak the design of its batteries or come up with an explanation for why this is happening more frequently to their phones compared to others and fix it. But in any case, this is not as big of an issue as some people are claiming it to be because it's only affecting some stored phones. I have stored all the Samsung flagships ever since 2016 and all of them are in perfect condition.
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