NexSys PURE batteries from EnerSys never require watering, providing a virtually maintenance-free power solution to help slash maintenance and downtime. Ideal for opportunity charging, NexSys PURE batteries also offer ground support crews the flexibility for charging between flights, with no long equalize charges required. The Wi-iQ battery monitoring device captures key operating data, allowing operators to identify developing issues before leading to battery failure and costly unplanned downtime. With a slim design for easy installation on the battery harness, the Wi-iQ device issues visible and audible alerts to the user on important operational parameters.