No, but I am a motorist since 2008 and never had to use that thing... and I am not using my car everyday, at times 2 weeks gaps
My car battery has not been replaced since it was manufactured which was in 2007.
You'd do well to get 10 years out of a battery! 5 years tops in my experience. Though with care and regular charging this can add a few years to their life. It's more important for cars that are only occasionally used.
on average you have to replace car batter every 10 years, will this device charge up the battery saving you cost to replace the complete battery?
Do you buy a new phone battery every time it needs charging.