What is the difference between voltage, current, capacity and power?

Electricity is commonly seen as the movement of electrons.

Voltage is defined by how much energy each electron has as it moves. The voltage of a battery is defined by the elements in the positive and negative side (cathode and anode). For example, Zinc/Manganese oxide in our alkaline batteries gives us a voltage of 1.5V.

Current is expressed in Amps (A). It quantifies how many electrons are flowing per second.

The capacity of a battery defines how much total energy is stored in each battery.

The power output of a battery is how much energy a battery can give at a given time. This is a very important factor as it defines what you should use the battery for. High drain devices (such as cameras) require a high power output battery (such as our Ultra range batteries). Low drain devices (such as remote controls or clocks) only need a small amount of power to function.