Kuxiu’s ‘world first’ solid-state power bank costs more but lasts much longer
The Kuxiu S2 magnetically attached to the MagSafe-compatible case on my iPhone 15 Pro.
Solid-state batteries are the future. They're more powerful, compact, safe, and sustainable than Lithium-ion alternatives, but true all-solid state batteries can't be mass-produced cost-effectively. That's why Kuxiu has gone semi-solid state for what it calls the "world's safest" power bank, while calling dibs on it being a world first.
Kuxiu's $79.99 S2 Qi2 5000mAh MagSafe Solid-State Power Bank supports Qi2 for 15W wireless charging. And with a 5,000mAh at 3.8V (19Wh) capacity, it holds enough energy to charge the smaller iPhone models from zero to full. And despite using the truncated "solid state" in the S2 name and product page, the company confirmed to me that it's built around a semi-solid state battery and that distinction matters.
I've been carrying the Kuxiu S2 for the past few weeks. While I didn't hammer, pierce, or tear the battery apart or expose it to fire like Kuxiu did, I can at least confirm that it otherwise works as expected.
"Solid state" ambiguity
It's not just you, the battery industry itself can't seem to agree on what qualifies as a solid-state battery. There's all-solid state, semi-solid state, and quasi-solid state, to name just a few of the mor …