I bought 2 unit of Zaptor for 2 of my cars, both also have the new batteries (NS80 & DIN65) drain die after 2weeks of not using d cars since i'm using other car.
the only question i had is when i take them (Zaptor) out, those cars battery can stand more than 3 weeks without starting. Problem solved.

It seems ZAPTOR is good if u r using ur car routinely NOT if, u have many cars that u can't drive all of them daily. Now i removed my ZAPTORS and i dont have to burden my memory on which car not warmed up or died batteries.

I am saying Zaptor does deliver all the improvement as stated by the owner.
He is also a very nice & friendly guy too.
My question is just a friendly question to seek understanding, and to learn more.