Racer Resurrection

[OldSwartout]

I'd be somewhat nervous with a 2.5 Ah battery, although it should last one race.  i used to run a standard 14 Ah  battery. It would run a full weekend - 4-5 practice sessions + 2 races, but that was about it.   

[craig641]

I used, through last season, a 4ah battery.  There were too many races that I dnf'd because of a dead battery.  I realized that the few ounces I saved wasn't worth it if you don't finish.

[OldSwartout]

It seems to me that one of the Lithium-Ion automotive jump start batteries rated at 20,000 mah should work and they weigh less than a small lead acid battery.  They are less than $100 at Walmart, etc.  The issue would be vibration, I think.  They probably aren't designed for a high vibration environment.