The days of removable batteries in smartphones and tablets is gone with more and more laptops and other devices also incorporating sealed battery designs. External battery packs are necessary when you ...

There are two types of electrical current: direct and alternating. Each one has unique benefits and disadvantages. Batteries, whether they’re small enough to power your smartwatch or big enough to run ...

Batteries aren't one-size-fits-all, and neither is the way they're wired to your house. Here's what you should know about AC- and DC-coupling. When we think about solar panels and batteries, we don't ...

When you think of air conditioners, you tend to think of rather bulky units, with the window-mounted appliances probably ...

The new Mophie Powerstation AC is a high-capacity external battery with AC power and USB-C PD fast charging for laptops, tablets, phones and other devices. Executive Editor David Carnoy has been a ...

I have reviewed quite a few portable battery power stations in recent years as these emergency power supplies grow in both capability and popularity. Given the increased frequency of power outages due ...

Generac Power Systems, known as a specialist in backup generators, has announced that its PWRcell products enable AC-coupled battery storage, as well as AC generator integration. This means that with ...

German start-up Sax Power GmbH is offering a residential AC battery it says works entirely without an inverter and has 50% more capacity and service life than conventional batteries. According to its ...

Switching from battery to AC power on your Dell laptop has battery-saving benefits. If you use your computer on the go in airports, meetings and conventions, your battery must last long enough to keep ...

The growing demand for efficient battery testers. How to calculate ac power requirements. Calculating ac power per phase for a three-phase system. One major factor driving the lithium-ion battery ...

Tesla is recalling 10,500 Powerwall 2 AC Battery Power Systems because of an issue with the lithium-ion battery cells. The Consumer Product Safety Commission said that some of the batteries in the ...