Battery Monitoring for NERC Compliance The Vigilant-NERC system is Eagle Eye's complete battery monitoring solution for NERC PRC-005-6 Compliance. This standard requires utilities to document and implement programs for the maintenance of all protection systems affecting the reliability of the bulk electric system (BES). Under NERC PRC-005-6, battery maintenance falls under Table 1-4(f) "Exclusions for Protection System Station DC Supply Monitoring Devices and Systems" with no maximum maintenance interval. This table outlines the monitoring and alarming requirements needed to alleviate periodic on-site maintenance activities. See below for how the Vigilant meets the attribute requirements of this table. NERC PRC-005-6 -Table 1-4(f) "Exclusions for Protection System Station DC Supply Monitoring Devices and Systems" *Maximum Maintenance Interval: No periodic maintenance specified Eagle Eye Power Solutions, LLC www.eepowersolutions.com 1-877-805-3377 [email protected]

Compliance for NERC Battery Monitoring Systems Key Features • State of Health: Patented machine learning algorithms incorporating new electrochemical parameters calculate cell State of Health and accurately predict in-service deterioration much earlier than current Ohmic methods of testing • Battery Risk Factor: A total of 12 separate parameters and five algorithms predict risk of battery failure • True Float Current: Vigilant's Advanced Multi-Function (AMF) sensors measure true float current without the remanence and temperature problems of Hall-effect transducers • Charge & Discharge Current:The...