5V to 21V USB Boost Charging Cable
Charge your 21V battery packs effortlessly with this 5V to 21V USB boost charging cable. Simply plug into a USB power source and enjoy fast, reliable power wherever you are.
- Converts 5V input to 21V output – perfect for charging 21V batteries from any standard USB port.
- Compatible with most 21V battery packs, including power tool batteries.
- Durable, high-quality construction ensures long-lasting performance and safe charging.
- Compact and portable design – easily fits in your toolbox, backpack, or glove compartment.
- Simple plug-and-play operation – no extra adapters or complicated setup required.
- Versatile solution for DIY projects, power tools, and battery maintenance.
Upgrade your charging game today with this practical and dependable USB boost cable!
