Depending on layout, motor and overall vehicle weight it should make a 10 min main (I did it with the older SMC 3600 Mah battery). Running 1/8 buggy indoors my prefered battery is the 4500 Mah SMC battery (sized like a 3s battery) the 4500 Mah batteries seem to have a much better life span while still being a light weight 4s battery. If you are looking for the lightest weight then the 3700 MAh is your ticket.