I'm content overall, thank you! Don't wait for miracles; you must consider a number of parameters (outside temperature, the state of the battery overall, fuel, and auto). I'm happy with the purchase; it was really helpful.
Pros
Good news! Naturally, a dead battery that draws more than 75 A cannot be revived, but as an auxiliary it is fantastic! After some downtime with -30 -32 degree frosts, I started a gazelle with a Cummins 2.8. Diesel gasoline was similarly like jelly at the same time.