I have a Cisco7606-S router with RSP720-3C-GE. We have getting the log message:*Jan 1 01:08:56.203: %C7600_PLATFORM-3-LOW_BATT: Low Voltage detected for NVRAM Battery*Jan 1 01:08:56.182: %C7600_PLATFORM-SP-3-LOW_BATT: Low Voltage detected for NVRAM...