Battery backup system, method of use, and method of manufacturing

摘要

An electrical system can comprise a system input configured to receive a first power signal from an external power source comprising a first voltage and a system output electrically coupled to the system input. The system may further comprise a charger module electrically coupled to the system input, a resistive component coupled between the system input and the system output, a power storage device electrically coupled to the system output and to the charger module, and/or a sense circuit electrically coupled across the resistive component and electrically coupled to the charger module.