Why bother to jump a Prius or TCH with another car.
All you need is enough amps to close the inverter relay and boot the computer.
A 12 volt flashlight (two 6 volt lantern batteries) will do it.
I carry a 12 folt emergency power source that can recharge via the 12 volt auxilary outlet (aka cigarette lighter).
This assumes your traction battery is not dead. If it is no jump will get it going. A dealer needs to charge that battery.