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Battery

In this section:

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

Warning

Low temperature and cellular conditions affect battery life along with any additional wake-ups (e.g., button pushes and alarms). Please follow our charging and storage guidelines.

Remaining battery percentage

Black half-full battery standing upright, number and percentage next to it.

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. Low Power Mode allows the device to collect data for longer before the battery completely depletes.

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:

    Controlant Saga Logger displaying Low Power Mode. Text on the image: "Low power mode. The logger is now in low power mode. Please charge device."

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:

    Controlant Saga Logger displaying Low Power Mode. Text on the image: "Low power mode. The logger is now in low power mode. Please charge device."

  • 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.

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