Semi Solid-state Wireless Power Bank SPB18
Power, Style & Peace of Mind — Perfected for Your iPhone.
Stay charged on the go with this sleek, travel-friendly Portable Charger for iPhone. With 5,000mAh of reliable power and a stylish design, it’s built for fast-paced lives and light packing.
🔋 Semi-Solid-State Battery for unmatched safety—even under extreme conditions
⚡ 5,000mAh Capacity keeps your iPhone powered all day, anywhere
🚀 20W PD Fast Charging for lightning-quick boosts when every second counts
📏 Slim & Lightweight Design fits effortlessly in your pocket, bag, or hand
🛡️ Premium Build with aluminum alloy and silicone—where durability meets sleek style
- Safety Battery Testing Video
- Power bank parameters
| Model | SPB18-1 |
| Product Size | 104×69.6×9.5mm |
| Net Weight | About 120g (Excluding packaging) |
| Colour | Can be customized |
| Battery | Semi-solid battery |
| Energy Conversion Rate | ≥75% |
| Battery Capacity | 5000mAh 3.8V/19Wh |
| Rated Capacity | 3000mAh (5V=2.4A) |
| USB-C Input | 5V = 3A; 9V = 1.67A |
| USB-C Output | 5V = 2.4A; 9V = 2.22A; 12V = 1.5A |
| Total Output | 5V=2.4A |
| Frequency | 110-148.5kHz |
| Output Power | 5W/7.5W/15W |

Ultra-Safe Power in Your Pocket
Meet the future of iPhone charging: our Semi Solid-State Wireless Portable Charger for iPhone. Built with cutting-edge battery tech, it stays cool and stable—even under extreme stress. Pierced by a nail? Cut with scissors? It won’t catch fire or explode. We’ve stress-tested it so you don’t have to. ⬅️ Click to watch the jaw-dropping safety demo.
With 5,000mAh of dependable power, 20W PD fast charging, and MagSafe-compatible wireless charging, this compact beast is designed for everyday confidence. Wrapped in premium aluminum alloy and silicone, it delivers both safety and sleek style wherever you go.
Style Meets Safety in a Compact Form
The SPB18 Portable Charger for iPhone fuses advanced battery safety with bold, minimalist design. Available in black, purple, and gold, it brings a splash of color and personality to your everyday tech setup.
Crafted with a premium metal casing and equipped with a handy lanyard, it’s made to move with you. Snap it directly onto your iPhone or other MagSafe-compatible phones for instant wireless charging—no cables, no clutter.
Simple. Stylish. Safe. The power bank that keeps up with real life.

Customizable Wholesale Solutions
We offer tailored solutions for wholesalers, including OEM branding and flexible MOQ starting at 2,000 units. Our factory-direct model ensures competitive pricing and consistent supply, with a production capacity of 500,000 units monthly. From custom packaging to logo engraving, we empower distributors to create unique Semi Solid-state Portable Charger for iPhone offerings. Partner with OET for Semi Solid-state Portable Charger for iPhone and power banks that meet diverse market demands and boost your brand’s reputation.
What exactly is a Semi Solid-state Power Bank, and how does it work?
A Semi Solid-State Power Bank represents the next evolution of portable energy storage technology. It’s built using a semi solid-state battery, which replaces the fully liquid electrolytes found in traditional lithium-ion batteries with a gel-like semi-solid electrolyte.
This innovative design merges the strengths of liquid and solid-state systems, resulting in a power bank that is safer, denser, longer-lasting, and faster-charging than conventional ones.

1. The Technology Behind Semi Solid-State Power Banks
In a typical lithium-ion power bank, the electrolyte is entirely liquid. This allows ions to move freely between the anode (negative electrode) and cathode (positive electrode) during charging and discharging. However, liquid electrolytes can be volatile and flammable, which leads to risks such as swelling, leakage, or even combustion under extreme conditions.
A semi solid-state power bank changes this by introducing a gel-like electrolyte matrix, in which solid electrolyte particles are dispersed within a polymer or gel medium.

This hybrid material:
Retains high ionic conductivity like a liquid electrolyte, ensuring efficient charge transport.
Offers mechanical rigidity and chemical stability, similar to solid-state batteries.
Greatly minimizes the chance of internal short circuits or thermal runaway.
As a result, it maintains the performance advantages of traditional lithium-ion batteries while dramatically enhancing safety and reliability.
2. How It Works
During charging, lithium ions move from the cathode to the anode through the semi-solid electrolyte. During discharging, they travel back to the cathode, releasing stored energy to power your devices.
The semi-solid electrolyte acts as a highly stable pathway for these ions, ensuring efficient energy transfer with minimal heat buildup.
Because the gel structure resists deformation and does not evaporate, the battery remains chemically stable and thermally safe even when exposed to external stress or puncture.
3. Key Advantages of Semi Solid-State Power Banks

🔋 Higher Energy Density
The semi-solid design allows more active material to fit inside the cell, offering 20–40% more capacity in the same size. This means longer runtime for phones, tablets, cameras, and laptops without increasing bulk.🔥 Superior Safety
With reduced liquid content and enhanced internal stability, the power bank is far less likely to overheat, swell, or catch fire—even under heavy load or high temperature environments.♻️ Longer Lifespan
Semi solid-state cells experience less internal degradation, supporting hundreds more charge cycles than traditional lithium-ion batteries. This reduces waste and the frequency of replacement.⚡ Faster and More Stable Charging
The improved heat dissipation and stable internal structure allow the battery to safely handle high current fast-charging, making it compatible with modern quick-charge technologies.🌱 Environmentally Friendly
These batteries use fewer toxic solvents, have a lower risk of leakage, and are easier to recycle—contributing to a cleaner, greener energy ecosystem.
4. Why It Matters

As electronic devices become more powerful and energy-hungry, users expect portable batteries that deliver both safety and performance.
Semi solid-state technology meets this demand perfectly — offering a balance of power, stability, and sustainability.
Whether you’re traveling, working remotely, or powering professional equipment, a Semi Solid-State Power Bank ensures that your energy source is as advanced as the devices it supports.
5. The Future of Portable Power

The shift toward semi solid-state batteries is part of a global movement toward safer and smarter energy storage.
Leading innovators in the battery industry are already adopting this technology for electric vehicles, drones, and now—portable power banks.
As production scales and material science advances, semi solid-state power banks are set to become the new standard for next-generation portable energy, combining compact design with unparalleled reliability.
Yes! Thanks to its semi-solid electrolyte, this power bank is much safer than conventional lithium-ion batteries. It has a lower risk of leakage, overheating, or combustion, making it a great choice for everyday use.
Compared to standard lithium-ion batteries, a Semi Solid-state Power Bank offers better energy storage, longer cycle life, and enhanced thermal stability. It’s a smart upgrade if you’re looking for performance and peace of mind.












