Google, Alexa or Siri: bring digital assistance into your home with a smart speaker. We've tested the best options for every budget.

Want peripherals that cling to the back of your iPhone – still one of the best phones on sale today – without a tube of superglue? Stick with this list of the best MagSafe accessories instead. From ...

Lithium-ion batteries have high energy density, lightweight and long life cycle, thus they are the choice for powering electric vehicles. The needed high voltage battery pack is achieved using ...