A lead acid battery gets the job done with no frills and is rechargeable, but it can be a cumbersome power source due to its weight and high internal resistance. In high use cases the efficiency can drop to as low as 50%.
Lithium-ion batteries are also rechargeable, but five times lighter than lead acid batteries. Their “smart” battery management system (BMS) offers temperature monitoring, data on power utilization and voltage, the ability to integrate with Internet of Things (IoT) devices and more. Operating at 93% efficiency, lithium-ion batteries hold their charge longer and have a longer lifespan than lead acid batteries. Plus their modular design is more serviceable.