Prevent data lost to Unexpected Power Failures. Compatible with all of RR35xx and RR4xxx series. Detection of BBU (Present or Disconnect) in controller BIOS and Web GUI. Monitor the status of BBU when charging and discharging. Monitor the percentage of charge present in the BBU. Monitor the health status (temperature and voltage) of the BBU (Five Status Indicators: Ok High Low Too High Too Low). Warning indicator and alter with alarm buzzer for low charge. Recharging and charging time for BBU (from empty to full) will be within 30 hours. Support up to 48 hours for data protection.