Power Disconnector Guard Every Charge USB-C - Silver

140W Fast Charging Power Disconnector USB-C Safety Adapter

The KUWAJIA KH-51 140W Fast Charging Power Disconnector is an intelligent USB-C charging safety accessory designed to automatically cut off power when a connected device reaches full charge. It helps reduce unnecessary charging time, supports up to 140W fast charging, and uses intelligent voltage and current monitoring with dual operating modes to provide safer charging for smartphones, tablets, laptops, power banks, Bluetooth earphones, and other rechargeable electronics.

Key Features

• Automatic Full-Charge Power Cutoff: Disconnects power after charging completion to reduce unnecessary charging time.
• Up to 140W Fast Charging Support: Designed for modern USB-C fast charging devices including smartphones, tablets, laptops, and power banks.
• Dual Intelligent Detection Modes: Provides different cutoff behavior based on device type.
• White Light Mode: Designed for screen devices such as smartphones, tablets, and laptops.
• Blue Light Mode: Suitable for non-screen devices including Bluetooth earphones, power banks, electric shavers, and rechargeable accessories.
• Smart Voltage & Current Monitoring: Continuously analyzes charging status to detect when the battery is effectively full.
• Physical Power Disconnect: Provides reliable power isolation after charging completion.
• Overnight Charging Support: Helps improve charging safety while reducing unnecessary trickle charging.
• Compact Lightweight Design: Easy to carry and use at home, office, or while traveling.
• Built-in Function Test Mode: Allows users to verify automatic disconnection functionality.

Who Should Buy This?

• Users who want safer charging for smartphones, tablets, laptops, and USB-C accessories.
• People who frequently charge devices overnight and prefer automatic power cutoff.
• Users charging non-screen devices such as Bluetooth earphones, power banks, and rechargeable electronics.

Technical Specifications

• Brand: KUWAJIA
• Model: KH-51
• Type: USB-C Auto Power Cutoff Adapter / Charging Safety Accessory
• Charging Support: Up to 140W fast charging
• Input/Output Range: Type-C DC 5V–28V, 0A–5A
• Detection Method: Voltage monitoring and intelligent full-charge detection
• Operating Modes:
  • White Light Mode for screen devices
  • Blue Light Mode for non-screen devices
  • Function Test Mode
• White Light Mode Cutoff: Approximately 10–50 minutes after device displays 100% battery
• Blue Light Mode Cutoff: Approximately 5 minutes after charging completion
• Dimensions: 42 × 34.5 × 19.3 mm
• Weight: 26g

FAQ

What is the KUWAJIA KH-51 used for?

It automatically disconnects power when a device is fully charged, helping reduce unnecessary charging time and improving charging safety.

Does the KUWAJIA KH-51 support fast charging?

Yes, it supports up to 140W USB-C fast charging.

How do the modes differ?

White Light Mode is designed for screen devices and disconnects approximately 10–50 minutes after 100% battery display, while Blue Light Mode is designed for non-screen devices and disconnects approximately 5 minutes after charging completion.

Is it suitable for overnight charging?

Yes, the KUWAJIA KH-51 is designed for overnight charging with automatic full-charge power cutoff protection.