I got kiwi new battery head strap for quest 3 earlier this month : r/OculusQuest

Safe Built-in 10000mAh Battery: This head strap built-in 10000mAh high-capacity battery, which can extend extra 4-7h playtime for VR headset. You can check the battery at any time through the indicator light. Our head strap with battery adopt safety protection systems such as overheat protection, overcharge protection, over voltage protection, over discharge protection, etc. With 18W charging power, it only takes about 2.5 hours to fully charge your Meta Quest 3.

Hurra Battery Head Strap Compatible with Meta Quest 3, 10000mAh Fast Charging Battery Pack Headstrap Extend Playtime, Adjustable Elite Strap

Finally settled on my new head strap : r/OculusQuest2

KIWI design Quest 3 Comfort Head Strap Review : r/oculus

FINALLY a Quest 3 Battery headstrap that actually works!!

Battery Head Strap for Quest 2

The KIWI design Comfort Head Strap is a comfortable and secure way to wear your Oculus Quest 2 VR headset. Made of soft, breathable fabric, it fits snugly over your head and helps distribute the weight of the headset evenly across your forehead and temples. It's easy to adjust and secure, ensuring a comfortable and immersive VR experience. Compatible with the Oculus Quest 2, this head strap is the perfect accessory for any VR enthusiast.

Kiwi Design Comfort Head Strap Accessories Compatible with Quest 2, Elite Strap Replacement for Enhanced Support, White

Single-Point-Charging(SPC) Battery Head Strap for Quest 3

Is this Aubika quest 3 battery strap anygood? : r/OculusQuest

Battery Head Strap for Quest 3