Virtually maintenance-free NexSys PURE batteries from EnerSys never require watering, reducing maintenance costs and downtime. NexSys PURE batteries are also ideal for opportunity charging, offering ground crews the flexibility to charge between flights. The Wi-iQ battery monitoring device captures key operational data to identify potential issues before battery failure and unplanned downtime occur. Its slim design facilitates installation on the battery harness and issues visible and audible alerts to notify operators of important operational parameters.