Review of Hagibis magnetic cold radiator for mobile phones

In today's article, I will review in detail the phone heatsink from Hagibis, a heatsink model that uses semiconductor chips (or commonly known as cold clams) with compact size and minimalist design. The valuable point of this device is its compact design and compatibility with Magsafe magnetic rings. Previously, I used a very good phone radiator from Cooler Master. However, this heatsink is a bit bulky and using the spring clip is not really convenient, so I really like the magnetic design on Hagibis's heatsink.

Design

Hagibis has a very simple design, a cylindrical block 1.6mm thick, with a diameter of about 5.9cm, with one side being a place to press against the phone, and the other side being a place to dissipate heat, and only has a mass of 46g, 1/2 or 1/3 the mass of other types of phone radiators. The box will come with an additional thermal conductive metal sticker for use with devices that do not have Magsafe magnetic magnets, and a USB A-C cable.

Around the remaining sides are gaps for heat dissipation, and aluminum heatsink fins can be seen inside.

In the middle is the radiator fan, the entire outer shell is ABS plastic, the slats are beautifully finished, all beveled edges, however you can still see some small excess plastic details. Simple design, not colorful RGB flowers and leaves.

When attached to the phone, it will look like the picture below, on the left is when used with iPhone 13 Mini and on the right is when used with iPhone 15.

The magnetic attraction of the Hagibis heatsink is not too strong, but it is still enough to lift the phone and cannot fall out of the device under normal use conditions.

The included magnetic sticker can be used with devices that do not come with Magsafe, and is also the only solution to use, as this heatsink does not have an included spring clip design like some other heatsinks.

Hagibis's thin and light design will not get in the way of the camera, even when you use a wide-angle camera. However, this heatsink will absorb air on the top and blow it around, so it will still blow into your hand if you hold the device horizontally to play games or record videos. This is a minus point in the design that I think is a trade-off for lightness.

Screenshot from Hagibis's introduction video Of course, when used like this, the SSD box is the main device that dissipates heat, but it will also indirectly help reduce the phone's temperature when in use.

Screenshot from Hagibis's introduction video

Practical activities

Although the Hagibis heatsink only comes with an A-C cable, the device itself uses the PD standard, so it can be used with a C-C cable which will be much more convenient.

The current used is 5V, so it can basically be used with all types of regular phone chargers. The manufacturer recommends using a charger with a capacity of 10W or more. One thing I find impressive about this heatsink from Hagibis is that it will evenly cool the entire surface of the heatsink against the phone, so the cooling area is also very large.

This is different from other cheap magnet heat sinks, which usually have a magnet ring on the outside and can only cool the inside with a smaller contact area, or even some types can only cool a very small area inside where there are cold clams without dissipating heat evenly across the entire contact surface.

Example of a cheap heatsink with a heatsink surface that uses a material that is a poor thermal conductor In essence, the inside will still be a cold rectangular block, however the heat dissipation surface is used with a good heat conductive material which will help the entire surface to be cooled well and transfer heat quickly and evenly to the entire surface. Heat dissipation products that use materials that do not conduct heat well will only cool a small area where the cold clam is placed.

Heat dissipation ability

To check the heat dissipation efficiency, I did a few heavy performance tests with my iPhone 13 mini device using Antutu V10 Benchmark software. Antutu score for iPhone 13 mini referenced on Antutu's website is 1,215,832

I tested while plugging in the charger, tested 3 times continuously without using the heatsink and 3 times continuously with the heatsink used. When testing without a heatsink, I also placed the device on a stand to place the device at a diagonal angle, similar to when testing with a heatsink.

Test without heatsink installed Test when installing heatsink Below are the results without using the heatsink. The performance of the device has decreased significantly, only hovering around 1 to 1.07 million Antutu points, significantly reduced compared to the device's highest performance level.

When using the heatsink, the device maintains maximum performance, with no signs of deterioration with more than 1.3 million points, even when I tested it 3 times consecutively.

It can be seen that the Hagibis heatsink is quite effective in cooling the machine, helping to maintain performance even during long tasks. In addition, if you are using a basic size iPhone (regular version, Pro version) or mini size, there will be an additional feature that is when attaching the heatsink, you can stand the device up like this.

And this image also shows a small drawback of this heatsink: there is no port to bypass the charging power from the heatsink to the phone, which is hard to ask for on cheap heatsinks.

Measure temperature

This heatsink does not have a temperature sensor, so I only measured the temperature during operation, with the ambient temperature being about 32.5 degrees Celsius, the temperature I measured was about 15.2 degrees Celsius, basically it can be about 17 degrees Celsius lower than the ambient temperature which is also quite good. Some other reference sources also measure the temperature of the Hagibis heatsink can be down to about 12 degrees with a room temperature of 27 degrees (about 15 degrees lower than the environment).

For comparison, a high-end heatsink like Cooler Master's Cryo that I have used only reduces the ambient temperature by about 18 degrees Celsius when running at highest capacity. Therefore, I evaluate the performance of the Hagibis heatsink as quite good compared to its size and compact design. In addition, I still maintain my opinion on heatsinks for phones, which is: colder is not always better. A phone cooler does not necessarily have the ability to freeze condensation on its surface. The reason is because: According to many documents from phone manufacturers (Apple, Samsung, Xiaomi), the optimal temperature of the environment for use is about 0-40°C. In addition, the optimal operating temperature of li-ion batteries is generally between 15-35°C. Beyond this temperature threshold, the charging and discharging capacity of the battery will also be reduced, affecting battery life (ResearchGate).

Optimal operating temperature of Li-ion batteries. Image source: ResearchGate Therefore, just enough heat dissipation, with the lowest temperature level of about 10-15 degrees, used with a phone that can heat up to 40 degrees, will bring the temperature balance to 25-35 degrees, just enough for good performance without affecting other internal components.

Noise level

Despite its compact body, Hagibis's radiator still operates quite quietly. I measured the noise level when operating at a very close distance, about 2cm. The maximum noise level that the heatsink emits when running at high level is about 55.3 dB, for low level is only 40.7 dB. This noise level is very low with a phone heatsink.

Under normal usage conditions such as when playing games, the sound of the fan operating does not affect the user at all. Even if you are not paying attention or there is other noise around, you may not even be able to recognize the noise of this cooling fan. However, for video recording or livestreaming, you will need to be careful, because if the fan runs at medium and high levels, it will record the fan sound into the phone's mic. At low levels, it may also be recorded, but because it is very small, it will not be too influential. Therefore, for activities such as video recording or livestreaming that require the use of a cooling fan, you will need to consider using an additional mic instead of recording with the built-in mic on the phone.

Summary

The Hagibis magnetic heatsink is a very useful accessory during the hot season, with a compact, minimalist design and convenient magnetic suction feature, along with good heat dissipation without being too noisy, it will be a suitable choice for those who need a phone heatsink that is good enough but still has a compact and minimalist design. The price of Hagibis radiators is also very accessible, about 230,000-250,000 VND, on sale it can be only about 160,000-170,000 VND. You can find and buy this product at Hagibis's official store on e-commerce platforms. I will leave the link below in the comments section. The detailed review of the Hagibis magnetic phone radiator ends here, thank you for your interest. Thank you for reading Ngon Bo Twitter's article on Tinh Te, I also have a Website, Facebook, YouTube and Group to share great deals. Ngon Bo Twittere - Independent reviewer.