Portable Gasoline /Diesel Intelligent jump starter with 12/V24V Switch and integrated protection system A good news,Sunnuo just release a newest 12V/24V big truck/heavy duty truck jump starter,which is not only suitable for 12V small car and 24V all of kind of truck,but also support lots of protections,with more safty for the end users,easy to started cars or trucks. 1)Over load protection; 2)Over charge protection, 3)Over discharge protection 4)Over heat protection, 5)Drain back protection; 6)Over voltage protection 7)Short circuit protection; 8)Revese polarity protection