Forum Discussion

1L243's avatar
1L243
Explorer II
Apr 27, 2022

TST 507 TPMS

I'm pulling my Rig out of winter storage and plugged in the TPMS monitor today to get it the internal battery charged up.

Everything works as it should all the sensors are working properly.

The unit has been plugged in for several hours now and the battery level indicator blinks and the bars surge indicating that it's charging. BUT when I unplug the unit the battery indicator blinks but shows no bars? I read that 4 hours is all that is needed to fully charge the device. Any thoughts?
  • 1L243's avatar
    1L243
    Explorer II
    Apr 27, 2022
    Well good news. I just rechecked it after being charging for about 8 hours and the battery indicator is now showing two bars.

    It must have been pretty low. I will let it charge overnight.

    For information: I do not remember reading this when I first got it but the wheel sensors will continue to use battery power if left on the valve stem when in storage. To save batteries it's recommended to remove the sensors.
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Apr 27, 2022
    I always pull the sensors when I put the trailer in storage because of that. They usually last several years that way. And all the fiddly bits are plastic, and I figure the less I mess with them the less they're apt to break. Or lose O-rings, or screws.
  • BarabooBob's avatar
    BarabooBob
    Explorer III
    Apr 27, 2022
    Make sure that the charger you are using has the correct output. Many old chargers only put out 1.0 amp and the newer ones put out 3.1 amp. I threw all of my old chargers away to avoid using the wrong ones. The 1.0 units worked well for flip phones but not much of anything else.
  • BB_TX's avatar
    BB_TX
    Nomad
    Apr 28, 2022
    I put new batteries in the sensors in the spring and didn’t remove the sensors until fall. New batteries again the next spring even though the old ones would still work. But not knowing how long I opted for new each spring.
  • Dutch_12078's avatar
    Dutch_12078
    Explorer II
    Apr 28, 2022
    As fulltimers, our TST 507 sensors are in use year round. At less than $1 apiece I replace the batteries annually on Jan 1st.
  • dodge_guy's avatar
    dodge_guy
    Explorer II
    Apr 28, 2022
    I just charged mine last week. I left it plugged in all night. During the summer it never has an issue charging as it never sits longer than 3 weeks. I try and remember to charge it every month sometimes it goes 2 months.

    On a related note, my cap sensor batteries are 2 1/2 years old. I bought new ones and will change them out this year.

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