Kuxiu’s ‘World First’ Solid-State Power Bank Costs More but Lasts Much Longer
Kuxiu S2: A Step Toward the Future with Semi-Solid-State Power
The future of batteries is solid — or at least, semi-solid — according to Kuxiu. The company is making waves with its S2 Qi2 5000mAh MagSafe Solid-State Power Bank, which they proudly claim to be the “world’s safest.”
While “solid-state” often evokes the image of completely solid batteries, the Kuxiu S2 uses a semi-solid-state design — an important distinction that affects both performance and price.
The Promise of Solid-State Batteries
Solid-state batteries have been hailed as the next breakthrough in battery technology. Compared to traditional lithium-ion batteries, they offer:
- Higher Energy Density: Store more power in a smaller, lighter form factor.
- Enhanced Safety: Eliminate flammable liquid electrolytes, significantly lowering the risk of fire.
- Longer Lifespan: Better resistance to degradation means batteries that last years longer.
- Eco-Friendliness: Some designs incorporate more sustainable materials.
However, fully solid-state batteries are still difficult and expensive to mass-produce, leading companies to pursue intermediate steps like semi-solid designs.
Kuxiu’s Semi-Solid Solution: The S2 Power Bank
The Kuxiu S2 power bank strikes a practical balance by leveraging semi-solid-state technology while keeping costs manageable. It delivers the critical benefits of improved safety and durability without the prohibitive expense of true solid-state manufacturing.
Key Features
- 5000mAh Capacity: Enough to recharge most modern smartphones completely at least once.
- Qi2 Wireless Charging: Supports up to 15W wireless output for fast, cable-free charging.
- MagSafe Compatibility: Magnetic alignment ensures a perfect fit on MagSafe-compatible iPhones.

What is a Semi-Solid-State Battery?
Semi-solid-state batteries are a hybrid approach — replacing traditional liquid electrolytes with gels or polymers.
This improves safety and stability without the technical hurdles of a fully solid-state battery.
While Kuxiu markets the S2 as a “solid-state” product, it’s important to understand that it’s technically semi-solid-state — an important, honest clarification in an industry where the terminology can be blurry.
Real-World Performance
The S2 is designed for everyday convenience:
- Lightweight and portable
- Magnetic attachment ensures ease of use
- 5000mAh capacity is ideal for a full recharge during travel, workdays, or emergencies
Its combination of portability and MagSafe precision makes it an appealing choice for modern smartphone users.
Clarifying the “Solid-State” Label
The battery industry currently lacks a strict definition of “solid-state,” which allows for some flexibility (and sometimes confusion) in marketing language.
Kuxiu’s transparency about their semi-solid design deserves credit, and despite the terminology, the S2 still offers genuine advantages over standard lithium-ion alternatives.
Is the Kuxiu S2 Worth Buying?
Priced at $79.99, the Kuxiu S2 costs more than traditional 5000mAh power banks. However, it brings:
- Safer semi-solid battery technology
- 15W fast wireless Qi2 charging
- Flawless MagSafe integration
- Sleek, compact design
For tech-forward users and those valuing safety and reliability, the investment is absolutely justifiable.
Pros and Cons
Pros:
- Semi-solid-state battery enhances safety and longevity
- Qi2 wireless charging (15W)
- MagSafe magnetic connection
- Compact, stylish design
- Full recharge capacity for most smartphones
Cons:
- Higher price point than basic power banks
- Not a fully solid-state battery
- Potential confusion due to “solid-state” branding
Conclusion: A Future-Ready Power Bank
The Kuxiu S2 Power Bank is not the endgame for solid-state battery dreams, but it’s an exciting and important step.
It showcases what’s possible today — safer, longer-lasting, and more user-friendly portable power.
If you want to stay ahead of the curve and invest in next-generation mobile charging tech, the Kuxiu S2 is a smart, future-focused choice.
Source: The Verge