Source: Drive Electric

The Science Behind Battery Capacity and Energy Storage

Understanding Battery Capacity

Battery capacity is a crucial metric that indicates the amount of charge or energy a battery can store. It is commonly measured in Amp-hours (Ah), which represents the amount of charge a battery can deliver in one hour.

The ideal battery capacity can be calculated based on the weight/volume or number of moles of materials in the battery’s electrodes and electrolyte. This calculation considers the moles of available reactants and electrons, determined using Faraday’s constant (F = 96,484.56 C/mol). The total stored coulombs can be calculated using the formula:

Capacity (Ah) = n × F × 1 hour / 3600 sec

Calculating Energy Storage

In addition to capacity, energy storage is a critical parameter for batteries. Energy storage capacity is determined by multiplying the Ah capacity by the nominal battery voltage. The formula for calculating energy capacity is:

Energy Capacity = Ah × Battery Voltage

By understanding these fundamental principles, we can grasp how batteries store and deliver electrical energy efficiently.

Source: Back Market

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