The PM3 55 Amp converter/chargers are versatile, advanced power source solutions. Clean, reliable DC power is ideal for powering electronics and appliances. The PM3 series is designed to provide clean power with or without a battery. Quiet operation is assured as the cooling fan runs only when needed. Another advantage is FCC Class B compliance, which means that the converters are designed not to cause inter- ference with televisions, radios or other signals. Key Features: Automatic three-stage battery charging maintains your battery's life with three nominal voltage output models: 13.2 Vdc range "float" mode 13.6 Vdc range "absorption mode 14.4 Vdc range"bulk" mode Electronic current limiting automatically shuts down power during overload or short-circuit conditions. Quiet operation in a wide range outputs. Convenient deck mount installation.