Battery Based Components
Basic PV systems consist of modules and an inverter system. When back up power is desired, its not quite as easy as just adding a few batteries, a couple additional components are needed to ensure the system runs properly. These mainly control how much the batteries are charged and discharged.
Earlier battery based components used to be their own separate identity however manufacturers are now looking at combining some of these components into prewired assemblies to simplify the system. These two companies are both based in Washington and are constantly at the forefront of innovating battery based component technology.