Edited Review: The company eventually did reach out to me to address my issues. Surprisingly, they ended up sending me another one since they said the original had to have been an internal wiring issue. The new one works perfectly and I'm very happy to get this resolved since the headstrap is my favorite! Thank you for reaching out and correcting this problem! Moved from 2 to 5 stars.Original Review: Purchased this for my Oculus Quest 3s. The headstrap itself is very comfortable and fits my large head well. This in itself is the only positive reason I've given this 2 stars. Unfortunately, I bought this mostly for the added convenience of an additional battery for longer play time that didn't work which is the negative reason I've given this 2 stars.The additional battery never worked as advertised. For some reason, when connected properly, it would only cause my Oculus to give a non-stop alert chime of being connected. The battery charging of the Oculus would only work for maybe 30 seconds before stopping and chiming non-stop. The only way I could stop the noise was by pushing the button on the battery itself, but as you've probably already guessed, 30 seconds later it returned. I decided to contact the selling company directly via the information they provided in the packaging. I did receive an automated return email stating they would get with me within 48 hours. A week later and still no reply. Attempted again only to still be ignored. Only other option was to return it which is what I've done. I found a different option that I went with because I didn't want to try this one again from a company that gives zero product support.