**BX500CI Features** Battery failure notification - Provides early-warning fault analysis on batteries enabling timely preventive maintenance. Resettable circuit breaker - Easy recovery from overloads; no need to replace a fuse. Boost Automatic Voltage Regulation (AVR) - Preserves battery life and maximizes runtime by correcting low voltages without discharging the battery. Automatic self-test - Periodic battery self-test ensures early detection of a battery that needs to be replaced. Adjustable voltage-transfer points - Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation. Adjustable voltage sensitivity - Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications. Audible alarms - Provides notification of changing utility power and UPS power conditions. Safety-agency approved - Ensures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment. LED status indicators - Quickly understand unit and power status with visual indicators.