Swollen batteries in the 3DS, PSP and PS Vita: the silent enemy lurking in your drawer

The handheld consoles that defined an era don't vanish when a new generation arrives: they simply end up in a drawer. And there, in silence, some of them start to cause trouble. According to Vida Extra, the lithium polymer batteries found in the Nintendo 3DS, the PSP, the PS Vita and also PS3 controllers run the risk of swelling as time goes by, especially when the device has gone years without being used or charged.

The warning matters because this is no lab curiosity. The outlet recalls an old Reddit post in which a user explained that they had dug out their 3DS after two years in storage and found the battery so swollen that it had actually cracked the casing. For a community like ours, full of people who keep their old handhelds out of nostalgia, for retro speedruns or for recording content, it is an uncomfortable but necessary reminder.

What you need to know

• Affected consoles: Nintendo 3DS, PSP and PS Vita, as well as PS3 controllers. They all share the same type of lithium polymer battery.
• The problem: over time these cells can swell and, in the most serious cases, warp or crack the device's casing.
• The trigger: neglect. The case cited by Vida Extra involves a 3DS that went two years without being used.
• The general advice: don't leave these machines forgotten, and take precautions to avoid a nasty surprise down the line.

Why these batteries age so badly

Lithium polymer batteries were the logical choice for the era of thin, lightweight handhelds: they take up little space, weigh less and hold a charge well. The problem is that their chemistry doesn't forgive neglect. When a cell of this type spends a long time completely drained, or endures heat and humidity for years, gases build up inside with nowhere to escape. The result is that puffed-up pouch users discover when they open the drawer.

In consoles like the PSP or the PS Vita the battery is relatively accessible, but in the 3DS and in PS3 controllers the component is boxed in fairly tightly. That's why, when it swells, the pressure ends up warping the plastic. What the Reddit user describes, with a cracked casing, is the extreme end of that process.

How to protect your retro handhelds

The source stresses taking precautions, and we've laid out the ones we consider common sense for any collector or player who doesn't want to lose their hardware:

1. Check them regularly. Take your consoles and controllers out every so often and look for any bulging in the casing, a back cover that no longer closes properly or a screen that looks like it's lifting.
2. Don't let them hit zero. A battery left fully drained for years is the worst possible scenario. Powering the console on from time to time and keeping some charge in it helps.
3. Store them away from heat. No attics, car boots or drawers next to radiators. A cool, dry spot is the bare minimum.
4. If it's already swollen, don't force it. Don't charge it, press on it or puncture it. Remove it carefully if the model allows and take it to a battery recycling point.
5. Consider replacing it. If you plan to keep using the console, swapping the battery for a new one is the safest way to enjoy the hardware without any scares.

Our take

Here at the Underworld Lordz editorial desk, we believe this is as much a preservation problem as a safety one. A good part of our community holds on to their 3DS or their Vita because that's where games live that never got decent ports, because they're perfect machines for competing in retro tournaments, or because they're an endless source of content for social media. Watching that hardware self-destruct in a drawer because of a battery is a sad way to lose playable heritage.

There's also a critical angle regarding the manufacturers. Nintendo and Sony designed these consoles to last in users' hands, but not to survive being forgotten. The battery is a consumable, and yet in several models replacing it isn't as simple as it should be, and today it's not easy to find replacements of guaranteed quality. That leaves the community at the mercy of the second-hand market and parts of dubious origin.

For content creators, the advice is twofold: make checking your retro hardware a routine, and if you record with these machines, don't leave them plugged in for months or forgotten in a backpack. A swollen PS3 controller in the middle of a livestream is an anecdote; a console that's damaged beyond repair is a headache that could have been avoided.

What do you think?

We want to know how your collection is holding up. Tell us in the team chat or on our Discord whether you've checked your old handhelds lately and what you found. Have you already had a swollen battery, or do you still not dare to open that drawer?