The stepping pace can be a very smooth gait. I suspect on this horse it is very smooth as this horse is not being held up overly high in ventroflextion of the back and there is some element of a relaxed flow to this horses gait.
Valucraft, Duralast, and Duralast Gold are AutoZone's private label brands for lead-acid automotive batteries (manufactured by Johnson Controls, East Penn, and other manufacturers).
I live up north, and my 7 year old battery started my Van last winter one night, after sitting out in minus 25 degree F weather overnight, without the heater plugged in. That's cranking over a 350 Chevy V8, with a carburetor. But it's a pretty good battery. A Duralast Gold (Autozone), that's rated at 850 CCA.