This 13 page, 1 hour course covers the basic concepts of lead-acid, VRLA, and advanced battery systems used in supplementing renewable energy, chiefly photovoltaic systems. Topics: General description of battery systems and subsystems Power conditioning subsystems (PCS) Applications, benefits, and impacts Review of lead-acid and VRLA batteries Advanced batteries Performance/Cost table Battery sizing for PV units Review of capital/O&M costs Intended Audience: general course intended for engineers interested in renewable energy topics. Publication Source: US Dept. of Energy (Sandia National Laboratories)