I like that this system has an auto shut off feature if not used for long periods of time.
This saves me from having to come home early because my batteries are dead! Not much else i dislike about it but we did have some issues getting our controller set up correctly when first using them so there could be better instructions out there as well. We use these to store solar generated electricity during the day then at night they discharge into our utility supply which helps us save money by reducing how often we need to run appliances such as air conditioners and heat pumps throughout the year.