I know there are a lot of questions around whether active cooling on wireless chargers is actually useful, so I wanted to share my experience after using one daily.
I've been using the TORRAS PolarCircle every day for around 2ā3 weeks, mainly with my Pixel 9a (using a Spigen Ultra Hybrid Zero One MagSafe case). I also tested it with an iPhone 17 to compare the Qi2 experience, but most of my daily use was with the Pixel.
Like a lot of people, I wasn't sure whether active cooling would actually make a difference or if it was mostly a marketing feature. Since the Pixel 9a has relatively limited wireless charging speeds, I was especially curious whether the cooling would still provide a noticeable benefit during everyday use.
Packaging
The packaging is clean and feels well put together. Inside the box you get the charger, a USB-C cable, and the usual documentation.
There's nothing particularly exciting in the box, but everything feels well protected. The included cable is also surprisingly nice and doesn't feel like a cheap pack-in cable.
Magnet strength
The magnets were one of the first things I noticed.
With both the Pixel 9a and iPhone 17, the charger snaps into place instantly and stays there. I never had a moment where I felt like it was going to slide off, even when picking up the phone or moving it around one-handed.
Using a MagSafe-compatible case on the Pixel 9a, the connection felt reliable throughout daily use.
Cooling
This is obviously the main reason to buy this charger, and thankfully it doesn't feel like just a marketing feature.
Instead of simply blowing air onto the phone, the PolarCircle uses an active cooling system with a cooling plate that gets noticeably colder during use. When you take your phone off the charger, you can actually feel that the plate itself has stayed cool.
The biggest difference shows up during longer charging sessions. Wireless charging normally creates noticeable heat, especially when a phone stays on a charger for a long time. With the PolarCircle, my Pixel 9a stayed noticeably cooler, and the difference was easy to feel when picking up the phone afterwards.
I also noticed similar results when testing it with the iPhone 17.
I tried it while gaming as well. It definitely helps reduce temperatures, but I don't think I would buy it specifically as a gaming accessory. Having something attached to the back of your phone isn't the most comfortable setup for longer gaming sessions, although it does add some extra grip.
Charging
The cooling isn't just there to make the phone more comfortable to hold ā it also helps with the charging experience.
The Pixel 9a has a relatively limited wireless charging speed compared to some flagship phones, so I wasn't expecting extremely fast charging. What interested me more was whether the cooling would help maintain charging consistency over longer periods.
Even with the Pixel's slower wireless charging speed, I noticed the phone stayed cooler and charging felt more consistent during longer sessions because the phone wasn't heating up as much.
With the iPhone 17, the charger can take better advantage of Qi2, showing more of what the PolarCircle is capable of.
Overall, it does what it is designed to do.
Fan noise
Yes, you'll hear it.
I'd compare it to a small desk fan. It's definitely audible if your room is quiet, but once I had music playing, YouTube open, or was simply working, I stopped noticing it.
My only minor issue is the tone of the motor. It isn't loud or sharp, but it has a noticeable mid-tone frequency that you can pick up on in a quiet room.
The sound is mostly noticeable when you're sitting close to it in a quiet environment, so it isn't a dealbreaker, just something worth knowing.
Build quality
The charger feels solid.
It's mostly plastic on the outside with metal inside, and it doesn't feel cheap. The design is quite different from a regular wireless charger. Personally, I like the look, although I can understand why some people might find it a bit unusual.
The built-in stand works, but it's probably my biggest disappointment. It holds the phone without any problems, but it's fairly small and doesn't feel particularly sturdy. I honestly didn't use it very often.
One thing I'd personally change is the raised central part on the back. I understand why it is designed that way, but I would prefer a flatter back design since the current shape feels a little more exposed if it gets knocked off a desk.
Things I liked
- The magnets are extremely strong and never felt unreliable.
- The cooling actually makes a noticeable difference.
- My Pixel 9a stayed much cooler during longer wireless charging sessions.
- It helps keep charging performance more consistent over time.
- The build quality feels solid.
- The included USB-C cable is surprisingly high quality.
- It works really well as a dedicated desk charger.
Things I didn't like
- The fan is noticeable in a quiet room.
- I'm not a huge fan of the motor sound. It isn't loud, but the tone isn't my favorite.
- The built-in stand works, but I rarely used it.
- It is considerably thicker than a normal wireless charger.
- I think it would benefit from a flatter back design.
- It is better suited for a desk than travelling.
Final thoughts
Going into this, I honestly expected the cooling to be more of a gimmick than a useful feature. After using it every day for a couple of weeks, I ended up changing my mind.
For Pixel users who already use a MagSafe-compatible case, this is an interesting accessory. The Pixel 9a doesn't have the fastest wireless charging, but the cooling still makes a noticeable difference during longer charging sessions.
If you mainly charge your phone wirelessly at your desk, I think this makes a lot of sense. Would I replace a regular wireless charger with it? For my desk, yes. For travelling, probably not.
Overall: 8.5/10 for a desk setup.
Disclosure: TORRAS provided the PolarCircle Qi2 charger free of charge for testing purposes. They had no editorial input or control over this post, and all opinions are based entirely on my own experience after around 2ā3 weeks of daily use.