RE: Samsung is odds on but...28 Jun 2025 11:08
Samsung’s S Pen doesn’t use a traditional battery—it relies on a supercapacitor (an ultracapacitor) to power its Bluetooth features (like Air Actions)
reddit.com
+4
theverge.com
+4
reddit.com
+4
.
Who makes these supercapacitors?
Samsung itself doesn’t publicly list the specific vendor for S Pen capacitors, but there are several industry-leading suppliers known in this space:
🔋 Likely Suppliers
CAP‑XX
An Australian company specializing in ultra-thin supercapacitors.
They license tech to electronics manufacturers like Murata and AVX
en.wikipedia.org
.
Murata & AVX
Murata holds a license from CAP‑XX to produce thin prismatic supercapacitors.
AVX also utilizes CAP‑XX patents for similar components
en.wikipedia.org
.
Given their expertise in ultra-thin parts ideal for slim devices like an S Pen, it’s highly plausible that Samsung sources from Murata (under CAP‑XX licensing) or AVX (via CAP‑XX tech).
Why CAP‑XX–based parts make sense for Samsung
CAP‑XX tech is commonly integrated into consumer electronics requiring small, fast-charging capacitors.
Samsung’s S Pen needs a capacitor that recharges in seconds and withstands thousands of cycles—exactly what these suppliers provide
reddit.com
+7
theverge.com
+7
en.wikipedia.org
+7
.
Summary
The S Pen supercapacitor is almost certainly sourced from a CAP‑XX–derived design.
The components themselves are manufactured by Murata or AVX, licensed from CAP‑XX.
Official confirmation? Samsung hasn’t publicly named the exact supplier. But given the technology fit and industry licensing, CAP‑XX via Murata/AVX is the most credible guess.
If you’d like, I can try digging into supplier chain reports or teardown analyses for more specifics. Just let me know!
Sources
ChatGPT can make mistakes. Check important info. See Cookie
Sign In
Follow the stocks
