What is the battery life of the PULSE sensor?
The PULSE sensor is a powerful piece of hardware that needs to be charged regularly so that it is always ready for use. It will typically take 2-4 hours to achieve a full charge on the sensor (see LED Colors and Patterns). Once you remove the sensor from the charger, it is always running an advanced event-detection algorithm to determine when an event has occurred. On a full charge, you can expect to have up to 8 hours of battery life under normal use conditions.
To ensure that your sensor is always ready to use when you need it, we recommend the following:
- Leave your sensor on the charger when not in use, or provide enough time for a full charge before you know you will be using the sensor. Only remove the sensor from the charger when you are ready to begin collecting data.
- If you must remove your sensor from the charger before you are ready to collect data, place it in a stationary location - such as on a table or in a locker - where it will not be bumped or rattled. After 10 minutes of no movement, the sensor will enter a power-saving sleep mode that will help it conserve battery life. This feature should not be assumed to provide enough power-saving potential to last overnight for use the next day. There is no on/off button on the sensor. Keeping the sensor in a sports bag, pocket, or moving vehicle will drain the battery life as it constantly evaluates motion for possible event detection.
- Place your sensor back on the charger as soon as possible following data collection to preserve the timestamps of the data. Keeping your sensor from dying will allow the internal clock to remain accurate. Accordingly, transfer your data with the sensor on the charger so that it does not lose power during a transfer.
By following these guidelines, understanding the operations of your sensor, and identifying a charging routine that fits into your training schedule, you can be sure that your PULSE sensor will always be ready to monitor your workload.