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As a bit of a PSA - you might want to ensure you're rather careful with Valve's new Steam Controller charging Puck. Keep anything conductive away from it.

There's a pretty big Reddit post that's appeared from user Toikka, who notes they accidentally left a metallic smartwatch strap laying around that went on top of the Steam Controller charging Puck and started "sizzling" that "Almost started a fire". Which…does not sound like something that's particularly safe. However, to be clear here, part of the issue is that this particular strap was attached to a watch that was actually on charge. So there was some cross-over happening here.

Picture the Redditor showed below:

I'm sure to some that this might seem like a "well, duh" moment. Don't leave things laying around chargers. Especially if they're also on charge. But, we're human, and humans can be pretty stupid or just generally clumsy. We also have children, pets and — you get the idea, accidents can definitely happen so this seems like something worth being clear about regardless.

As for overall safety - Valve are likely not the only hardware vendor to have this issue, as there's quite a few controllers out there that have a similar sort of charging pin system (like the 8BitDo Ultimate series).

Luckily, I still had the Steam Controller box and manual left here. So I dug into the manual, and Valve do actually have a small and pretty clear safety notice on this:

But, who actually reads this kind of small-print? My bet is only a very tiny minority of people, especially for something usually as simple as a game controller. Ideally, Valve should look to add a much more prominent warning (like in the Steam client) - just to be a bit more on the safe side.

I've emailed Valve to provide a comment on the safety of it and will update if they reply.

Article taken from GamingOnLinux.com.
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9 comments

syylk 2 hours ago
Tbh, live charging connectors should be sockets, not prods, to reduce the chance of involuntary short-circuits.
Bumadar 2 hours ago
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But, who actually reads this kind of small-print? My bet is only a very tiny minority of people, especially for something usually as simple as a game controller. Ideally, Valve should look to add a much more prominent warning (like in the Steam client) - just to be a bit more on the safe side.
Oh please, take responsibility, its magnetic, it has electricity......
Liam Squires-Hand 2 hours ago
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Quoting: Bumadar
But, who actually reads this kind of small-print? My bet is only a very tiny minority of people, especially for something usually as simple as a game controller. Ideally, Valve should look to add a much more prominent warning (like in the Steam client) - just to be a bit more on the safe side.
Oh please, take responsibility, its magnetic, it has electricity......
I think you vastly overestimate how many people understand that at all.
Klaas 2 hours ago
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It is bad design to have exposed pins that carry a current. Even if they are not magnetic. There is always a risk that something conductive falls on top of it and starts a fire.
Cley_Faye 2 hours ago
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I'm surprised that this can happen. These being pins is an issue, but at some point they have to expose some contacts. What worries me is that it seems that this is more or less a passthrough from the power source, and there's no current limit or any other safety feature.

It's hard to say from pictures, but that metal strap seems to have been quite conductive. There should be some safety shutdown when a short is detected across the pins.

I wonder if there's some extra details we're not aware of, or if it really is that "dumb".
tfk 1 hour ago
I had something like this happen to my PS4 dualshock controller when I put it in the microwave to dry after cleaning.
mindedie 1 hour ago
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Quoting: KlaasIt is bad design to have exposed pins that carry a current.
All external battery chargers/dock (for cylindrical, prismatic, random battery packs and whole devices) have exposed pins. Sound way to close to alarmist BS...

Quoting: Cley_FayeIt's hard to say from pictures, but that metal strap seems to have been quite conductive. There should be some safety shutdown when a short is detected across the pins.
Puck it self just connector/plug like barrel jack or any other? All "intelligence" are in charging bricks. Good stuff have all safety features: shorts, wrong polarity, current surge protection etc. More important what was connected to other end of Puck... PC/laptop and similar USB port are low power, except USB C power delivery ones.

Last edited by mindedie on 22 May 2026 at 4:42 pm UTC
Klaas 1 hour ago
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Quoting: mindedieAll external battery chargers/dock (for cylindrical, prismatic, random battery packs and whole devices) have exposed pins.
No, they don't. There are some, but most that have exposed conductive surfaces only have ground connections on the outside. Take a look at the cylindrical connectors of olden times (okay this one can have the positive on the outside depending on polarity), all types of USB-plugs, Molex, the power part of SATA, etc. are safer by design.

This is pure laziness. Even if you limit the current (which obviously you should) you have to assume as a designer that that mechanism can fail (and it will wither by aging or by production error).
mindedie 45 minutes ago
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Quoting: Klaas
Quoting: mindedieAll external battery chargers/dock (for cylindrical, prismatic, random battery packs and whole devices) have exposed pins.
No, they don't.
Charging BL-5C batteries, right now, dock/slot pins are nice and exposed. Looking at camera pack, AA, AAA, 18650, 21600, 6LR61 chargers... kinda same, exposed. If shorting pins with something conductive, charging brick (stops) start blinking for errors...
Molex... try using (detachable) molex cables from one manufacture PSU on different manufacture or even same manufacture, just different model.
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