Here is a Simple LED Volt meter to Monitor the charge level in Lead Acid Battery or Tubular battery. The terminal voltage of the battery is indicated through a four level LED indicators. The nominal ...

In today’s boats, electric power rivals the importance of engine horsepower. Even the electronic control unit on today’s marine engines—that brain that makes outboards and inboards do what we want ...

Use of battery-powered systems have expanded as consumers have migrated to portable phones, MP3 players, digital cameras, and more. One reason for this growth has been the availability of batteries ...

The MagSafe Battery Pack appears to have a tiny capacity when examining its milliamp-hour rating, but that isn't the whole story. Here are the battery ratings and what they mean to users. Apple hasn't ...

All electric vehicles have big battery packs that can hold dozens of kilowatt hours of electricity, which are required to power their powerful traction motors for hundreds of miles. For some EVs, ...

Most of us — casual users and enthusiasts alike — are forever searching for smartphones with the longest battery life. And while fast charging keeps us topped up every day, the absence of replaceable ...

Battery life is one of the most important factors when choosing which iPhone to buy. Measuring iPhone battery life in straight hours of real-world usage (as Apple likes to do) is not an accurate ...