The AE series-J photovoltaic modules provide cost-effective photovoltaic power for DC loads with moderate energy requirements. With 36 cells in series, they charge batteries efficiently in virtually any climate. These modules are made with monocrystalline cells laminated behind tempered glass with aluminum frames. The 50-watt and larger modules have an industrial-grade conduit- ready junction box on the back that has knockouts for two standard 1/2" conduit fittings. Typical commercial applications of these modules include remote telemetry, instrumentation systems, security sensors, signals, and land-based navigation aids. The 5- to 20-watt modules have a 10-year power output warranty. The 50-watt and larger modules have a 25-year power output warranty. Made in China. Peak Power (watts) 50 Peak Power Voltage (volts) 17.32 Peak Power Current (amps) 2.87 Open Circuit Voltage (volts) 21.53 Short Circuit Current (amps) 3.22 Dimensions (inches) L x W x H 28.3" x 21.85" x 1.3"