Like Mike B. Said, start on 12V and run in 9V. GM has done that for years.
Improved starting was their goal-
1947 GMC Truck 5 window, Long Bed
2008 Corvette Roadster
2008 Harley Davidson FXDL
2011 F150 Ecoboost 4X4
2015 Subaru Outback AWD
"only the strong survive"
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