I bump start with the 5th gear any speed above 15 mph, in 4th between 15 and 12 mph. Anything below that speed I prefer to key start. Key starting use alot of energy, but for a very short delay. It takes far less energy than a 5 second low assist. And normally, the car does it all the time and sometime way more than 5 seconds. I never saw a SOC bar change after a key start. I can key start 3 to 10 times depending on how Lucky I am. I find it way more conveniant than a conventional 12v starter
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