I use this one at work but it is bulky Clore Automotive Jump-N-Carry JNC660 1700 Peak Amp 12 Volt Jump Starter https://www.amazon.com/dp/B000JFJLP6/ref=cm_sw_r_cp_tai_u6efFbFPRGDBQ I have a friend who has one of the hand held ones and it works pretty well. NOCO Boost Plus GB40 1000 Amp 12-Volt Ultra Safe Portable Lithium Car Battery Jump Starter Pack For Up To 6-Liter Gasoline And 3-Liter Diesel Engines https://www.amazon.com/dp/B015TKUPIC/ref=cm_sw_r_cp_tai_w7efFbMNAZNE9