Battery testers and analysis tools are used to assess the health, performance, and capacity of batteries, including rechargeable batteries and cells commonly found in devices ranging from smartphones to electric vehicles. These tools help determine a battery’s state of charge, state of health, and overall functionality. There are various types of battery testers and analysis methods available, ranging from simple handheld devices to more advanced equipment used in industrial and research settings. Here are some key aspects of battery testing and analysis: