[American Inst. Aeronaut. & Astronautics 35th Intersociety Energy Conversion Engineering Conference - Las Vegas, NV, USA (24-28 July 2000)] Collection of Technical Papers. 35th Intersociety Energy Conversion Engineering Conference and Exhibit (IECEC) (Cat. No.00CH37022) - High-temperature batteries for geothermal and oil/gas borehole applications