When you buy through our links, Business Insider may earn an affiliate commission. Learn more When winter storms knock out the power, they rarely give much warning — and suddenly, everyday essentials ...

To get the best efficiency for my battery backup system I want to make sure that the backup battery is large enough to cope with at least twice the total amp hours required in my calculations. So, in ...

Your utility Power Factor is the ratio of the system’s Real Power and the Apparent Power (Eq. 1, Fig. 1). This unitless factor ranges from −1 to 1. The Power Factor ratio aptly describes the type of ...