I looked at it and couldn’t find any that offered enough cranking amps. I’m not sure how easy it would be to design a lifepo4 battery for the application.
Lithium batteries are more than capable of starting cars, and at a fraction of the size (just look up "car starters" and the like on Amazon - those are usually a tiny lithium battery that you pull 50c from). The thing is they are usually much pricier for an equivalent size battery and have problems in the cold that make them unsuitable in some climates.
