Question

Hello,
I have a problem with my FMB920.

When i have my FMB920 connected to the car battery and the car starts moving, it wakes up from ultra deep sleep and sends me an SMS.
But, if it is in a ultra deep sleep mode already and i disconnect it from the car battery (working on internal backup battery), it wont wake up with accelerometer. No matter what i do, it stays in sleep mode until i reconnect it to the car power system and then it wakes normally again and sends me an sms.
Movement source is set to accelerometer and the internal backup battery is fully charged.

I don't know if it's a bug or a feature, but for me it's a safety issue.
If the tracker is in ultra deep sleep mode (at nights) and someone disconnects the battery, i wont get any notifications because the tracker wont wake up.
Is there anything i can do to make it work?
Thanks!

Answer 1

Hello.

Please verify your device firmware version and update if needed:

https://wiki.teltonika-gps.com/view/FMB920_firmware_errata

In firmware 03.25.14.Rev.03 there was fix implemented - Wake up from ultra-deep sleep improved

Note, that all newer versions contain fixes from previous versions, current version is 03.27.13.Rev.03

Regards

Comments

Thank you for reply.

I checked the fw version and it's 03.27.7.Rev.0

I tried the deep sleep mode and it seems working. But i would like to use ultra deep sleep to save battery.