Battery life in a Connect Sensor XRT-M NEMA

Connect Sensor XRT-M NEMA uses sleep and wake modes to manage power use. The device wakes only for sensor readings and sending reports to Digi Axess. It is in sleep mode at all other times to maintain low power consumption.

The batteries are well-suited to producing power even under extreme temperatures, and are designed to maintain a steady voltage throughout the usable life of the battery. Once the battery is almost entirely depleted, there is a measurable drop in supplied power. 

Digi Axess enables customers to be notified when a device has completed a fixed number of delivery cycles in order to allow for the planning of battery replacement before the device stops reporting.  When the Digi Axess power indicator for a device goes red, the battery has reached its threshold of measurable power loss, and the device is likely within 50 delivery cycles of its end of life.

WARNING! If you disconnect the batteries and reconnect them, it resets the cycle counter. The default is 7,000 cycles.

Digi calculations for battery life assumes the following conditions:

• Adequate cellular network coverage where Connect Sensor XRT-M NEMA is installed.
• Connect Sensor XRT-M NEMA sends reports to Digi Axess a maximum of two times a day.
• Connect Sensor XRT-M NEMA is not powering high-current sensors with long read delays.

Battery depletion

A battery will be depleted before the expected time range when any of these conditions are met:

• Temperature fluctuation: The temperature at the device's location affects the battery. Battery power is used more quickly in a cold environment than in a warm environment. A battery in a device located where the temperature is consistently 20° F will not last as long as a battery in a device located where the temperature is consistently 80° F.

• Scheduling reports: Scheduling more than two reports a day may shorten the battery life.