Using A Husa Casti Actually Extends Your Battery Life Significantly
Not using by means that the technology used is incidental, and the focus is on the approach being shown to be feasible. Without more context it's impossible to say what the intended import of the sentence is and whether by would actually be better or not. And that means that this question is Not A Real Question.
Novitec 655000032 Megapulser 12V Battery Regenerator Extends Life 5x ...
