Hello!
I'm using FMB003 and Gpswox.
It happens several times when the battery level on a car randomly jumps to 0 when the car is deffinetly moving.
Here you can see the speed of the car at 17:43:14:

And the battery level at the exact same time:

Why could this happen? He could send data of other sensors at that time, only the battery level showed 0%.
Thank you for your help :)