I just got a GL-XE3000 and I'm more than happy with it.
As I travel a lot and my car has an Standalone infotainment (that requires internet connection), I installed it on my car (at the trunk) using a 12V charger charges the battery every time I turn on the car. As it charges faster than it consumes, most of the time the router stays awake several hours after I turn off the car.
I would like to know if it would be possible to configure the router to turn off after a certain amount of time of WI-FI/LAN inactivity ?
Of course I can turn-off by myself, but as the router is in the trunk of my car, I would to have some piece of mind and get everything automatically (turn on and turn off).
That router really doesn't draw much at 12 volts. I believe I measured something like 200ma. Average car battery is around 50 amp hour which would be like 7 days for ~50% discharge. If you do park the car for more than a few days at a time, the router might begin to be a factor to be concerned about. They have a switching power supply, so in my experience, it survives the dive to ~10 volts or so on vehicle start without the router restarting. But, if you see the need to kill it after a while, internal "die after x time of no traffic" might be able to be done with a script and cron job to look at traffic counters. But once dead, it stays dead. External hardware is available that can do it. Expensive vs. cheep...
Hey n2qew, thank you so much for your time to think about it, it gave me a lot of new ideas.
Nonetheless, I think I was not so clear. The "problem" is not the car battery it self, because the 12V car outlet turn off with the car, what remains working is the router battery. And, as soon as I turn on the car, it starts charging the router, therefore the router turn on after a couple of seconds.
The only real "problem" is the router battery keep draining until 0% all the times that I park the car. But, it is really a small problem.
I think you have a couple of possible choices. If it's more or less installed in your vehicle, disconnect the internal battery, power cycle it like an x3000. Or, if you drive at least every few days, leave it powered continuously. It definitely will take a week or more to significantly discharge your car battery. Or, get a timer and set it so it will run for 120 hours or so after car shut down. That way if you do park it for a while, it will turn off after 5 days. Internal battery will run down at that point, not nearly as frequently as it would without a timer.