NEET BIOLOGY

Detailed explanation-1: -Batteries use chemistry, in the form of chemical potential, to store energy, just like many other everyday energy sources. For example, logs and oxygen both store energy in their chemical bonds until burning converts some of that chemical energy to heat.

Detailed explanation-2: -A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell.

Detailed explanation-3: -The useable energy of a battery is the range at which the battery can operated over a SOC range. 100% SOC means your battery is 100% charged. When you are applying a load to your battery the result is the depth of discharge (DOD) of the battery. SOC of 100% and DOD of 100% are avoided to maximize the battery life.

Detailed explanation-4: -The vast majority of lithium-ion batteries-about 77% of the world’s supply-are manufactured in China, where coal is the primary energy source. (Coal emits roughly twice the amount of greenhouse gases as natural gas, another fossil fuel that can be used in high-heat manufacturing.)

Detailed explanation-5: -The battery operates through electrochemical reactions called oxidation and reduction. These reactions involve the exchange of electrons between chemical species. If a chemical species loses one or more electrons, this is called oxidation.