# State of charge (SOC)

The State of Charge (SOC) of a battery indicates how much energy is stored in the battery as a percentage of its full capacity. A battery with a SOC of 50% has half of its energy available for use. The SOC can be estimated by measuring the voltage and current of the battery, and is typically displayed on a meter or gauge on the battery itself.

### What is SOC and SOH in battery?

A battery's state of charge (SOC) indicates how much charge is remaining in the battery, while the state of health (SOH) indicates how well the battery is able to hold a charge. The SOC is a measure of the battery's current charge level, while the SOH is a measure of the battery's ability to accept and retain a charge.

What should battery SOC be? The battery state of charge (SOC) is the percentage of charge remaining in the battery, and it is typically displayed on the device itself. A full charge is 100% SOC, and 0% SOC indicates that the battery is empty. In general, it is best to keep your SOC between 40-80% to extend the battery life.

#### How do you calculate SOC?

In order to calculate SOC, you will need to know the following:

1) The starting voltage of the battery
2) The ending voltage of the battery
3) The capacity of the battery in Ah

From this information, you can calculate SOC using the following equation:

SOC = (Vend - Vstart)/(Vend - Vstart)*100

Where:

Vend = Ending voltage of the battery
Vstart = Starting voltage of the battery At what percentage should a car battery be replaced? A car battery should be replaced when it reaches about 70% of its original capacity.

#### Why SOC of battery is important?

SOC, or state of charge, is the easiest way to determine how much charge is left in a battery. It is a measure of the capacity of a battery, and is generally represented as a percentage. For example, a battery with an SOC of 50% means that it has 50% of its capacity left.

SOC is important because it allows you to determine how much charge is left in a battery, and how long it will last before it needs to be recharged. It is also a good indicator of how well a battery is performing - a battery with a high SOC will typically have a longer lifespan than one with a low SOC.