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When it comes to VR, comfort and battery life are essential. If your headset is uncomfortable or keeps dying, the experience can quickly go south, whether you’re immersed in long gaming sessions or watching a movie in virtual reality. This is where the Quest 3/3S Kiwi Design H4 Boost Halo Battery Strap is useful. This strap is a great upgrade for your Quest 3/3S because it offers a comfortable, secure fit and a significantly longer playtime. Its design is reminiscent of my first VR headset, the PSVR.


Design and Comfort: A Trip Down Memory Lane
The Kiwi Design H4 Boost’s design reminds me of the original PSVR, which was one of the first things that caught my attention. The H4 Boost’s front-and-back structure distributes the weight of the headset while gently cradling your head, much like the PSVR’s “baseball cap” setup. It’s difficult to top the level of comfort offered by the two padded cups, one of which rests on your forehead and the other at the back of your head.
If you’ve ever used the Quest’s stock head strap, you know that, particularly during longer sessions, it can feel like an elastic band squeezing your face. That problem is resolved by the H4 Boost, which provides a much more ergonomic and balanced fit. The padding doesn’t feel like it’s pressing against your skin because it’s soft yet strong enough to hold its shape. In particular, the back cradle is excellent at keeping the headset from gradually slipping down, which is an issue I’ve had with other straps.
However, it does take some time to properly set up the H4 Boost. A great degree of customization is added by being able to change the front and back parts as well as the strap’s height, but it also means you’ll have to take a little longer to find the ideal fit. During the first setup, I spent roughly ten minutes tinkering with it, modifying the height and the back cradle until it felt perfect. But once I dialed in the correct settings, the headset practically melded with my head, and I barely noticed it was there during my gaming sessions.
Weight Distribution and Setup
One aspect of the Kiwi Design H4 Boost Halo Battery Strap that’s worth noting is its weight. This head strap does have a little more weight to it than some of the others I’ve reviewed. But there is a benefit to that extra weight: longer battery life, which I will discuss soon. The key here is to ensure that the weight is evenly distributed, and that’s where the adjustable components shine.
I soon learned how important it is to strike the correct balance. After some time, the headset may feel a little front-heavy if the front isn’t positioned properly, which can be uncomfortable. The same is true for the back; if the cradle isn’t properly adjusted, your neck may feel pressure. Again, though, the weight feels precisely balanced once everything is in its proper place. The extra battery weight built into the back is barely noticeable because of how comfortably the padded cups hold your head. Compared to the stock strap, which provides almost no comfort or weight distribution, this is a huge improvement.
Battery Life: Fast Charging for Long Sessions
The H4 Boost’s integrated battery is undoubtedly one of its primary selling points, and it performs admirably. Depending on what you’re doing, the 6400mAh battery can play music for an additional three hours. I discovered that the battery held up well during gaming sessions in games like Beat Saber or Lee Mills’ Body Combat, providing a reliable 2.5 to 3 hours before requiring a recharge.
However, the fast charging is the true game-changer. You can simultaneously charge the Quest 3/3S and the battery strap thanks to Kiwi Design’s dual charging system. In roughly two and a half hours, I was able to fully recharge both devices using a 45W adapter (not included). This translates to more time spent in virtual reality and less downtime, which is precisely what you want from an accessory like this. Because the charging port is situated on the underside of the strap’s back, plugging it in is a breeze and requires no fumbling. Small design elements like these demonstrate how Kiwi Design has improved this model and learned from its earlier iterations.
The ease of continuing to play while the headset is plugged in is another pleasant feature. You won’t have to worry about running out of power in the middle of your VR adventures as long as your charging cable is long enough. This is where the thoughtfully positioned USB-C port really comes into play; because it’s at the back of the strap, the cable won’t get in the way and you can continue to enjoy the experience to the fullest.


Design Details: Smart Innovations for Seamless Gameplay
The H4 Boost’s attention to detail is one of my favorite features. Kiwi Design has made some astute changes to its earlier head strap designs, obviously considering user feedback. The USB-C port’s location is the most noticeable of these, but there are other, less noticeable enhancements as well.
For instance, the adjustable top strap and elastic side straps provide a snug fit that fits almost all head sizes. I occasionally have trouble finding straps that fit my slightly larger-than-average noggin, so this was a huge plus for me. Even when I’m moving around a lot during intense gaming sessions, the H4 Boost fits me snugly but comfortably.
Another well-considered feature is the slider for adjusting the front-to-back FOV. You can find the ideal field of vision (FOV) for any type of content you’re enjoying, such as gaming, watching movies, or using productivity apps, by adjusting the distance between your eyes and the headset. This feature is particularly helpful for making sure that your experience stays clear and comfortable for extended periods of time.
What’s in the Box
- H4 Boost Halo Battery Strap for Quest 3/3S
- Adjustable Top and Side Straps
- User Manual
Features Section
- Extended Playtime: 6400mAh battery delivers up to 3 hours of extra VR time.
- Dual Fast Charging: Recharge both the Quest 3/3S and the strap simultaneously in just 2.5 hours using a 45W adapter.
- Zero Facial Pressure: Ergonomic design distributes weight evenly across the forehead and back of the head.
- Custom Fit: Adjustable top strap, side straps, and FOV slider allow for a personalized, secure fit.
- All-Day Ventilation: Cooling vents in the headrest keep you comfortable during long gaming sessions.
- Lie-Down Comfort: Adaptive design lets you use the headset while lying down, perfect for movies or relaxation.
Pros
- Incredible Comfort: The padded cups and smart weight distribution make long sessions a breeze.
- Fast Charging: Dual charging ports allow you to power up quickly and efficiently.
- Thoughtful Design: Features like the USB-C port placement and FOV adjustment make a big difference in usability.
- Sturdy Build: The durable construction ensures the strap will last for many VR sessions to come.


Conclusion
All things considered, the Kiwi Design H4 Boost Halo Battery Strap is an exceptional item that improves the Quest 3/3S experience in every manner. It stands out from the competition thanks to its thoughtful design elements, longer playtime, and exceptional comfort. The end result is a perfectly balanced and incredibly comfortable virtual reality headset that feels more like an extension of your body than a heavy device strapped to your face, even though the initial setup requires some patience. This is the battery strap you need if you want to genuinely improve your virtual reality experience.