Still my best mod to date

Just note that all the units work similar, including the factory one in my new RAM, that tire pressure/temp will update once you start driving, say about 50 yards or so. When it turns on the next day of driving, it will still show the pressure and temp from the last time you drove, but they usually quickly synchronize after driving a little bit.

Also, the batteries are cheap and easy to replace, there is one in each sensor, so no worries there. I don't think you need to rebalance your tires after installing, I've installed these kits in all 3 of my old vehicles and 1 motorcycle and didn't notice any balance issues even up to 90 mph.