These 5kW and 8kW inverters offer NRS approval, excellent safety features and parallel ability. They are user friendly, reliable and have 2 MPPTs. They are able compatible with lead-acid and Lithium-ion batteries, which gives you the power of choice. These excellent inverters come with a standard 5 year warranty with the choice of purchasing a 5 year warranty extension, giving you peace of mind and a total warranty period of 10 years.