Battery
Battery type
The Saga™ logger has a rechargeable 2500mAh NiMH battery, with a lifecycle of at least 300 charge cycles. NiMH batteries are not considered hazardous goods.
Expected battery life
The Saga™ logger can be expected to function for up to 110 days on a single charge while in an active shipment based on the wake-up interval of 12 hours.
Wake-up interval | Expected battery life on a single full charge |
|---|---|
1 hour | 20 days |
2 hours | 35 days |
3 hours | 45 days |
6 hours | 75 days |
12 hours | 110 days |
24 hours | >110 days |
Remaining battery percentage
 |
The battery icon and the battery percentage next to the symbol show the remaining battery percentage. The black bar size shrinks as the battery level reduces.
Low power mode
Low power mode: Battery 10% or less
When the battery level goes below 10%, the device enters low power mode and only wakes up every 24 hours to sync data.
In low power mode , the device:
Switches to 24-hour wake-up interval, whether in shipping mode or standby mode.
The display indicates Low power mode with a full-screen service message:
The device remains in low power mode until one of the following happens:
The device battery level goes down to 5%, and the device goes into Hibernation mode.
The device is charged until the battery level reaches 15% and the device resumes normal operation.
Hibernation mode: Battery 5% or less
When the battery level reaches 5% or less, the device enters Hibernation mode and suspends everything except measuring temperature every 10 minutes.
In Hibernation mode, the device:
Measures temperature and logs in the memory.
The display indicates Low power mode with a full-screen service message:
The following functionalities are stopped in hibernation mode:
Modem wake-up
LED lights
Light sensor
Accelerometer
Barometer
Wake-up and LED behavior due to "button press" is switched off. Button events are still registered to memory.
The device remains in Hibernation mode until one of the following happens:
The device battery is fully depleted.
The device is charged until the battery level reaches 15% and the device resumes normal operation.