5V to 21V Boost Charging Cable – USB DC Lithium Battery Adapter
5V to 21V Boost Charging Cable – USB DC Lithium Battery Adapter
5V to 21V Boost Charging Cable – USB DC Adapter for 21V Lithium Batteries
Keep your 21V lithium battery-powered tools and devices charged and ready with this reliable 5V to 21V Boost Charging Cable. Featuring a DC interface and USB input, this compact adapter cable steps up a standard 5V USB power source to the 21V output needed for compatible lithium battery packs — no bulky original charger required.
Whether you need a quick replacement for a damaged charging cable or a handy spare for the workshop or job site, this durable boost cable delivers a dependable charge in a 50 cm or 100 cm length. Made in Mainland China.
Key Features
- 5V to 21V Boost Technology: Converts a standard USB 5V input to a 21V DC output, compatible with 21V lithium battery packs.
- DC Interface Connector: Plug-and-play DC adapter tip for secure, stable connection to your battery or device port.
- Durable Construction: Built from high-quality plastic and metal components for long-lasting, dependable performance.
- Practical Length Options: Available in 50 cm and 100 cm cable lengths to suit your workspace needs.
- Replacement-Ready: A cost-effective substitute for original OEM charging cables — ideal for replacing worn or damaged accessories.
- Multi-Pack Options: Choose from a single cable (1 pc) or a value pack of 5 cables — great for workshops, teams, or as backup spares.
Specifications
- Input Voltage: 5V (USB)
- Output Voltage: 21V (DC)
- Type: Boost Line / Step-Up Cable
- Cable Length: 50 cm / 100 cm
- Material: Plastic + Metal
- Country of Origin: Made in Mainland China
Package Contents
- 1 or 5 × 5V to 21V Boost Charging Cable
- Note: Lithium battery NOT included.
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Frequently Asked Questions
Q: What devices is this 5V to 21V boost charging cable compatible with?
A: This boost cable is designed for use with 21V lithium battery packs that accept a DC charging interface. It is commonly used as a replacement charging cable for cordless power tools and similar battery-powered equipment that require a 21V DC input. Always verify your device's charging port type and voltage requirements before use.
Q: Does this cable replace the original charger that came with my tool?
A: This cable is an aftermarket replacement and is not an original OEM accessory. It is designed to function as a substitute for damaged or lost 21V lithium battery charging cables. We recommend confirming connector compatibility with your specific battery model before purchase.
Q: What USB power source do I need to use this cable?
A: The cable accepts a standard 5V USB input, which means you can power it from a USB wall adapter, power bank, or any USB port that provides 5V output. The built-in boost circuit then steps up the voltage to 21V DC for charging your lithium battery pack.
Q: How many cables come in the pack?
A: You can choose between a single cable (1 pc) or a value multi-pack of 5 cables. The multi-pack is ideal for stocking up spares or equipping multiple tools at once. Lithium batteries are not included.