I have jump started dozens of vehicles...
Using a Jump Pack so long as you hook up properly (Positive to positive)odds of damage approach ZERO
Using a portable battery.. Likewise
Using the BOOST switch on your dash (may be labeled AUX start or Emergency Start)
likewise
Using a battery charger/booster..Likewise
Always making sure to hook up properly
Hook up backawards YOU WILL KNOW IT INSTANTLY
Now...Jumpstarting off another vehicle
I have ruined a few alternators that way.. Always on the donor vehicle, Never on the stranded.
This is the primary reason I have a jump pack battery.
