Overview

  • Extended playtime with enhanced battery
    Enjoy uninterrupted gaming with up to 3 hours of additional battery life. Play longer without worrying about running out of power. Tailored to your usage scenarios for maximum performance.
  • Dual fast charging, two times faster
    Power up both K4 Boost and Quest 3/3S simultaneously with DualFast Charging system. Fully charged in just 2.5 hours. A 45W adapter delivers 25W output to Quest 3/3S. Reach 50% charge in 30 minutes for two hours of playtime.
  • Comfortable and balanced design
    Game longer with enhanced comfort. Enlarged rear support and thickened padding reduce facial pressure. Better weight balance reduces strain on the head and neck for extended play.
  • Safe and reliable materials
    Built off high-quality battery cells and advanced charging system. Multiple layers of protection including NTC and UL certifications. Materials rigorously tested in TUV lab for safety and durability.
  • Easy wear and quick qdjustment
    Easily put on and take off your Quest 3/3S with a 52-degree damping hinge. Quick adjustment dial ensures a perfect fit every time. Share the fun instantly with family and friends.
  • Sleek and lightweight
    Designed for superior comfort and balance. Ultra-Light, it is lightweight and perfect for extending your VR experience.

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Specifications

Capacity & configuration

Accessory Type
Holder

Dimensions & weight

Product Name
K4 Boost Battery Head Strap for Meta Quest 3/3S
Product Height
6.69 inches
Product Width
0 inches
Product Length
7.95 inches
Product Weight
0.79 pounds

Features

Brand
KIWI design
Compatible Platform(s)
Meta Quest 3
UPC
850052498382

Power & warranty

Model Number
QS02B
Warranty - Parts
Not applicable
Warranty - Labor
Not applicable

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
MICHAELWAug 25, 2026 · Verified purchase ★★★★★

Works great - So much more comfortable than the original strap. Easy to adjust for when the kids want to use it.

BenjaminGJul 5, 2026 · Verified purchase ★☆☆☆☆

It doesn’t work after 1 month - I bought the unit to extend my battery life and if worked for about a month. Now it won’t charge let alone charge my Quest. Would recommend buying the Meta Official model even though it is more expensive and has less mAh. At least you know it’s quality and compatibility.

LEVITICUSWJun 26, 2026 · Verified purchase ★★★★★

This is so good for its price - They have another one on here that’s 100 something dollars and has a hour less play time add them you have these that are way cheaper and have 1 extra hour more play time you end up having 5 whole hours of having fun in vr thanks to this thing plus it charges so fast I honestly thought they were lying but it’s true it really does charge it up quick even while you play

MAVERICKSJun 11, 2026 · Verified purchase ★★★★★

Nice head strap from kiwi its super comfortable - Its super comfortable and it give me more battery then the stock one

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat