Battery-free TPMS
The latest vehicles use a TPMS system without any little batteries in the sensors - it relies on the centrifugal action for energy. Do any of the aftermarket TPMS systems for trailers use this tech...
Forum Discussion
Hmm, why not a sensor mounted in the rim, powered by electromagnetic induction as new phones can be charged? I hear it is a pain moving sensors back and forth to winter and summer tires, costing more than the cost of the product itself over a few years. SIL says he has sensors in both sets of tires and after changes the sensors often fail to be recognized by the truck.
