140W Type-C Smart Battery Guard – Auto Stop Overcharge Protection

EOENKK 140W Type-C Smart Battery Guard — Charge Smarter, Protect Longer

Tired of worrying about leaving your phone plugged in overnight? The EOENKK 140W Type-C Physical-Disconnect Battery Guard automatically cuts power once your device hits 100%, keeping your battery in peak condition and giving you true peace of mind. Compact, fast, and incredibly smart — this is the charging accessory every modern device owner needs.

Key Features

⚡ Ultra-Fast 140W Charging

Supports up to 140W fast charging for smartphones, laptops, tablets, and all USB-C devices. Meet the power demands of today's most advanced electronics and cut down charging time significantly — without sacrificing safety.

🛡️ Smart Auto-Disconnect Protection

Built-in intelligent battery detection monitors your device's charge level in real time. Once your device reaches full capacity, the adapter automatically disconnects power within 10–50 minutes. This physical-disconnect mechanism prevents overcharging, preserves long-term battery health, and makes overnight charging completely worry-free.

🤖 Two Selectable Function Modes (Type-C)

• White Light Mode: Ideal for screen-operated devices that remain powered on — such as smartphones and tablets.
• Blue Light Mode: Perfect for non-screen devices like Bluetooth headsets, power banks, electric shavers, beauty instruments, children's toys, and select laptops.

Simply press the button once to switch between modes. The Lightning connector version operates in a single, optimized mode.

🧲 Port-Safe, Device-Friendly Design

The charging interface features soft silicone cushions around the connector. Removing the adapter won't scratch or stress your device's charging port — protecting your gadgets from wear and tear with every use.

📦 Ultra-Compact & Portable

Measuring just 4.2 × 3.3 × 2 cm and weighing only 25.5g, this tiny adapter slips effortlessly into a pocket, bag, or purse. Whether you're at home, in the office, or traveling, it's always ready when you need it.

🔗 Universal Compatibility

Works seamlessly with virtually all USB-C enabled devices — iPhone, iPad, MacBook, Android smartphones, Samsung Galaxy devices, and more. One versatile adapter for all your daily charging needs.

Specifications

• Type-C Input/Output: DC 5V–28V, 0A–5A (up to 140W)
• Lightning Input/Output: DC 5V–28V, 0–5A
• Material: Fire-Resistant PC (Polycarbonate)
• Dimensions: 4.2 × 3.3 × 2 cm
• Weight: 25.5g
• Country of Origin: Made in China

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: How does the EOENKK 140W Battery Guard prevent overcharging?

A: The Battery Guard uses intelligent battery detection technology to monitor your device's charge in real time. When your device reaches 100% battery, the adapter physically disconnects power within 10–50 minutes, cutting the charging current entirely. This physical-disconnect mechanism — rather than a software workaround — ensures your device is never exposed to prolonged overcharging, helping maintain long-term battery health for smartphones, laptops, tablets, and more.

Q: What is the difference between White Light Mode and Blue Light Mode on the Type-C version?

A: White Light Mode is designed for devices with screens that remain active and powered on during use — such as smartphones and tablets. Blue Light Mode is optimized for non-screen devices like Bluetooth headsets, power banks, electric shavers, and some laptops. You can switch between modes with a single press of the button, allowing the adapter to correctly detect charge completion for different device types.

Q: Is the 140W Battery Guard compatible with iPhones, MacBooks, and Android phones?

A: Yes! The EOENKK Battery Guard is designed for universal USB-C compatibility and works with a wide range of devices including iPhones (USB-C models), iPads, MacBooks, Android smartphones, Samsung Galaxy devices, and other USB-C enabled electronics. The Lightning connector version is also available for older Apple devices. Always verify your device's maximum supported wattage before use.

Q: Is this adapter safe to use for overnight charging?

A: Absolutely. The entire purpose of the Battery Guard is to make overnight charging safer and more convenient. Once your device is fully charged, the adapter automatically cuts power — so even if you fall asleep with your phone plugged in, the adapter handles the rest. The fire-resistant PC casing adds an additional layer of safety during extended use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.