5V to 21V Boost Charging Cable – USB to DC Adapter for 21V Batteries

Convert compatible 5V USB power into a higher-voltage output with this 5V to 21V Boost Charging Cable. Designed for compatible 21V battery applications and power-tool accessories, this cable provides a convenient charging solution when used with an adequate USB power source.

Its compact design makes it easy to keep on hand as a replacement or backup charging cable for compatible equipment.

Key Features

• 5V to 21V Boost Conversion — Converts compatible 5V USB input to a higher-voltage output for compatible 21V battery applications.

• USB Powered — Connects to a suitable USB power adapter or charging source.

• Designed for 21V Batteries — Intended for compatible 21V battery and power-tool applications.

• Replacement Cable — Useful for replacing damaged, worn, or missing compatible charging cables.

• Compact & Portable — Easy to store and carry when working on projects or traveling.

• Durable Construction — Made with flexible rubber materials for everyday handling.

• Single-Cable Solution — Simple design makes it easy to connect a compatible USB power source to the intended device.

Specifications

• Type: 5V to 21V Boost Cable

• Input: 5V USB

• Output: 21V

• Model: 5V to 21V

• Material: Rubber

• Quantity: 1 piece

• Application: Compatible 21V batteries and power-tool accessories

Important Compatibility Notice

This is a high-power boost cable and requires an adequate USB power source. The manufacturer recommends using a 5V / 3A or higher USB power adapter.

Always verify the voltage, connector type, polarity, and power requirements of your device before use. This cable is a replacement accessory and is not an original manufacturer charger.

What's Included

• 1 × 5V to 21V Boost Charging Cable

Convenient USB input. 21V boost output. Designed for compatible battery and power-tool applications.