Designed to improve puncture resistance, thermal stability, and long-term reliability for mobile devices.

What happens if a battery is punctured?​

Most people already know the answer.

Smoke.
Heat.
A damaged battery that's no longer safe to use.

That's one of the reasons DEJI has been developing semi-solid-state battery technology.

This is not a concept.

This is next-generation mobile phone battery technology that has already entered mass production.

A revolution in the mobile phone battery industry

Over the past decade or so, mobile phones have become increasingly smart.

Chips, screens, and cameras have all seen continuous upgrades.

Yet, mobile phone batteries have remained stuck in the era of traditional lithium-ion technology.

Swelling, overheating, safety hazards...

These industry pain points continue to plague consumers worldwide.

Today, DEJI is taking the lead in breaking with tradition.。

Officially launching the all-new generation——

DEJI Semi-solid-state mobile phone battery

Ushering in a new era of mobile phone batteries with revolutionary technology.

 

What Is a Semi-Solid-State Phone Battery?

A semi-solid-state battery is an advanced lithium battery structure that replaces a large portion of the traditional liquid electrolyte with a more stable semi-solid or gel-like material.

In conventional lithium-ion batteries, the liquid electrolyte plays a key role in ion transfer—but it is also one of the main sources of safety risk under extreme conditions such as overheating, puncture, or physical damage.

DEJI semi-solid-state technology reduces liquid content to a minimal level, significantly improving internal stability and safety performance.

Does not catch fire upon puncture.

Redefining Security

Safety is never merely a matter of specifications.

It is the bottom line.

When subjected to external damage, the internal structure of conventional pouch-cell lithium batteries is prone to losing stability.

DEJI's semi-solid technology employs an innovative electrolyte system, significantly enhancing the battery's thermal stability and safety performance.。

Even when faced with extreme puncture tests：It remains fully functional and capable of maintaining power supply.

This marks the official entry of mobile phone battery safety into a brand-new era.

Say goodbye to the swell or bulges.

For Apple phone users:

Battery swelling is one of the most troublesome issues imaginable.

A single drop,

being subjected to pressure,

or prolonged use in high-temperature conditions—

any of these can cause traditional Li-ion batteries to deform and swell.

In severe cases, the swelling can even push the screen out of place and damage the entire device.

To address this industry pain point, DEJI semi-solid-state mobile phone batteries feature a more stable internal structural design, offering superior impact resistance and mechanical strength.

Whether subjected to everyday drops, vibrations during transport, or external pressure from long-term use, semi-solid-state batteries maintain a more stable operating state, effectively reducing the risk of swelling.

For users who frequently rely on their phones for work, gaming, live streaming, or outdoor tasks, this means the battery can maintain stable performance for longer periods, even in challenging environments.

Semi-solid technology delivers a leap in safety performance.

Traditional lithium-ion batteries for mobile phones utilize liquid electrolytes; when subjected to external puncture or crushing, or in the event of an internal short circuit, they are prone to generating significant heat, thereby creating risks such as smoking, combustion, or even catching fire.

DEJI’s all-new semi-solid-state mobile phone battery utilizes advanced semi-solid electrolyte technology, significantly reducing the safety risks associated with traditional liquid electrolytes. Rigorous testing has demonstrated that even if the battery is punctured by a sharp object, it will not emit smoke or catch fire.

Even more impressive is that, following the puncture test, the battery continued to function normally and power the phone. This means users benefit from a higher level of safety assurance, even in extreme scenarios involving accidental impact or battery damage.

For the mobile phone repair industry, distributors, and end consumers, this is undoubtedly a significant technological upgrade.

How to Compare Semi-Solid-State Batteries

The most reliable evaluation method is independent testing, including:

• Charging efficiency tests
• Heat and thermal stability tests
• Cycle life performance
• Safety stress tests (overcharge, puncture, short circuit)

Brands that publish transparent, third-party validated test results generally offer more trustworthy performance claims.

Longer service life and a more durable user experience

Beyond improvements in safety and structural stability, DEJI semi-solid-state mobile phone batteries deliver ultra-high capacity and excellent cycle life performance.

Compared with conventional lithium-ion batteries, which gradually lose capacity after repeated charge and discharge cycles, semi-solid-state technology enhances electrochemical stability and helps slow down the aging process.

As a result, DEJI ultra-high-capacity semi-solid-state batteries provide not only longer runtime per charge, but also an extended overall service life—reducing the need for frequent replacements and lowering long-term usage costs.

For repair shops and wholesalers, higher-quality batteries also help reduce return rates and improve end-customer satisfaction.

Why Performance and Safety Still Vary

Not all semi-solid-state phone batteries are engineered the same way.

Key differences include:

• Cell chemistry formulation
• Manufacturing precision and consistency
• Internal enclosure and insulation materials
• Thermal management design
• Charging protocol compatibility
• Certification standards (or lack of independent verification)

Because many manufacturers do not disclose full technical specifications, real-world performance cannot be judged by marketing alone.

Why do global customers choose DEJI?

Comparison	Traditional Lithium Battery	DEJI Semi-Solid-State Battery
Safety	Standard	✅ Higher Safety Standards
Puncture Resistance	Willget fire, cannot use	✅Can still use after puncture
Swelling Risk	Higher over time	✅ Reduced Risk of Swelling
Drop & Compression Resistance	Weak	✅ Stronger Resistance
Service Life	Standard cycle life	✅ Longer Service Life
High-Temperature Stability	Average	✅ Improved Stability
After-Sales Return Rate	Higher	✅ Lower Return Rate
Repair Shop Reputation	Depends on battery quality	✅ More Reliable Performance
Product Competitiveness	Standard market offering	✅ Stronger Market Advantage
Profit Potential	Limited differentiation	✅ Greater Premium Pricing Potential

*Compared with conventional lithium-ion battery designs under similar test conditions.

Offering Apple users a more secure choice

As the market places increasing emphasis on mobile phone safety, consumer demand for high-quality replacement batteries continues to grow.

The semi-solid-state mobile phone battery launched by DEJI not only upholds the brand's consistent high-quality standards but also employs innovative technology to resolve industry-wide challenges associated with traditional pouch cells, such as a tendency to swell and poor impact resistance.

From puncture safety—ensuring no fire—to resistance against compression and drops; from structural stability to extended lifespan, every detail reflects DEJI’s relentless pursuit of product quality.

Moving forward, DEJI will continue to increase investment in research and development, drive continuous innovation in mobile phone battery technology, and deliver safer, more durable, and more reliable battery solutions to users worldwide.

DEJI

Safer · More Durable · More Reliable

DEJI semi-solid-state mobile phone batteries are designed to bridge the gap between traditional lithium-ion technology and next-generation safety-focused battery systems.

With improved thermal stability, reduced safety risks, and enhanced structural