When the time comes to buy a portable external battery, you have to choose between the largest one you can afford or going for a smaller one. I'm here to argue that smaller is better. Don't get me ...

Trojan's battery sizing calculator is designed to simplify the task of properly sizing a battery bank for off-grid renewable energy systems. A battery bank is a vital component of a system, so careful ...

The iPhone Air has surprisingly good battery life for users with light-to-medium daily usage habits. But if you are going to be away from a charger for a long time, especially going travelling like on ...