Power Cycling Franklin T9 Hotspot

  • 9 January 2022
  • 4 replies


I use a Franklin T9 hotspot to remotely control the thermostat in my cabin.  Occasionally the power goes out for an extended period of time, and the hotspot battery dies.  I then need to manually turn it back on again.  Is there a way to set it up such that it restarts automatically when the power comes back on?  Thx.

4 replies

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Wow! It is so cool to see the creative ways that the hotspot devices are being used 😃 They are originally designed to be used on the go in bursts instead of long term situations like these. It is cool that they are filling the need fairly well, but knowing the nature of the device it makes sense why these types of errors would be seen. I like the idea of getting devices that are specifically designed for the long term, stationary use. I would love to see T-Mobile offer something for long term connection in more unconventional areas where our home internet may not be available. Feedback heard and being passed along. 😁


FYI, I solved this problem by buying a 4G LTE router.  I took the SIM out of the T9, dropped it in the router, and it “just worked”.  The router powers up automatically when when plugged in so it will restart automatically after a power failure, and I can put it on a timer to power cycle it if I need to.  So far I’ve not had to.

I have the exact same issue as Chuck D. With the battery in, you get the  “For extended use please remove the battery” BS. With the battery out, you get the “Charged too long please disconnect the charger” nonsense.

Apparently no one knows how to remedy this problem, as this thread appears to be 3 months old. It’s totally unacceptable (and don’t even think about questioning why I think it is unacceptable).

So, given that the T9 is faulty (and it is, clearly, faulty), can anyone tell me if the T10 works properly? I am not sure I really want to stay with this lame-ass company, but you know… There is Devil you know vs. the one you don’t.

We use a Franklin T9 hotspot as well for an extended use situation in a vending machine. We encountered after a certain period (~2-3 weeks) where the screen on the hotspot gave us the message “For extended use please remove the battery.” This makes sense because in some other devices we’ve experienced, when it’s charging and powered on constantly with the battery installed, over time this may put the battery at risk of swelling and rupturing. (Note: we have NOT had this experience with our Franklin T9, but it has happened to us with an AT&T hotspot and an iPhone 6s before.) Seems like a nice safety feature they added to have this.

HOWEVER, we did remove the battery and the unit was working great for a period with no battery, just plugged in via the usb charger. I can’t say specifically how long this period was but it was less than 2 weeks before the unit stopped broadcasting a signal and we received a message on the hotspot unit stating “Charged too long please disconnect the charger.” Alas, I don’t know if there’s a way to use these in an “extended use” scenario, but perhaps someone at T-mobile can help?


I also thought of the idea to have the outlet that the unit is plugged into essentially power cycle itself daily, so that the device would restart itself daily and not run into this problem. However, the device does not auto-startup upon losing power, the button has to be manually pushed in order to fire up and begin broadcasting a signal. Maybe there is a setting to change this auto-start, but I’ve yet to find it.


Sorry I couldn’t solve your problem but figured I’d share my struggles and hopefully we’ll resolve some day. Cheers.