Regarding chargers, what is one of the critical metrics that should be documented?

The critical metric that should be documented regarding chargers is the power factor. Power factor is an essential measure that indicates how effectively the electrical power is being converted into useful work output. In the context of battery chargers, a good power factor means that more of the power drawn from the electrical source is being used to charge the battery, rather than being wasted as reactive power.

When analyzing the efficiency of a charging system, knowing the power factor allows for better assessment of how much energy is being utilized versus how much is being consumed. This is particularly important in marine and other specialized applications where energy efficiency can significantly impact performance and operating costs. Therefore, documenting the power factor provides valuable insights for evaluation and optimization of charging systems.

Other metrics, while potentially relevant for various contexts, do not carry the same level of importance as power factor when it comes to assessing the efficiency and effectiveness of chargers.