The battery-powered USB charger isn't an altogether new idea. We'd be remiss not to point out previously mentioned Minty Boost, the classic Altoids-tin-gum-battery-powered charger.

The vaping industry continues to evolve, incorporating new technologies to enhance user experience and device functionality.

6. Final Touches: Attach the 9V battery to the circuit, and your DIY USB charger is ready to use. You can now charge your USB devices on the go by simply connecting them to your new charger.

Despite the big “245W” in the names here, neither the new charger nor the new battery pack uses the recently released USB-C PD 3.1 spec that enables charging at up to 240W. Rather, the number ...

The charger itself just takes whatever power is available and then uses it's own charge circuit to charge your battery. So many of the USB chargers will be 5V/2A input and some of the ones listed ...

But in many cases, there's still a lingering need for USB-A to charge older devices, and that's where Ugreen's 4-in-1 100W GaN X Fast Charger comes in handy.