Third-party companies sometimes come up with some interesting products, such as this well-loved, and multi-purpose, ...

We may receive a commission on purchases made from links. We selected tools containing USB-charged, compact lithium-ion batteries that don't require much power to get the job done and benefit from ...

Arguably the most useful part of USB’s power capabilities is the ability to charge batteries in portable devices, but there is more to battery charging than picking a power source, USB or otherwise.

Abstract: At home, in the car, or plugged into a computer, USB-powered portable equipment needs a smart method for determining the appropriate amount of power to draw for both normal operation and ...

Images of fake MagSafe Battery Packs with a USB-C charging port instead of Lightning are being shared on social media sites, potentially hinting at preparations to mirror Apple's release of such an ...

Editor’s note: This article is part of our roundup of USB-C battery packs. The simplest way to discuss electrical power is in units of volts (V), current measured in amperes or amps (A), and watts (W) ...

If you’ve owned an electric bike, e-scooter, or other personal mobility device (and especially if you’ve owned more than one), you know they all have a charger that pretty much fits nothing else you ...

Design considerations for battery charging from USB include how fast a device with a discharged battery must operate with full functionality when plugged into a USB port; time allowed for battery ...

thanks to everyone’s great feedback, i’ve now got a usb battery that’s much more efficient and capable of delivering more current to a portable device. like i promised, i put together a slick little ...

found out yesterday that there’s a shuffle shortage and gadget battery life can only be expected to get worse. bummer. at least you can make the most of your waiting-for-shuffle blues and solder ...