I've got a fuel injected sled that requires a battery. No electric start - but the battery is needed to run the fuel pump and get the injector rail up to pressure.
I replace the battery every year, check the fluid level regularly, and throw it on a charger every once in a while if it's been sitting.
Everyone wonders about the reliability of this kind of set up since you'll be stranded if you have a dead battery.
Sled has sat for the past 4 days of 40-50 below temps - I'll check voltage tonight to see how the battery is fairing...but no test is as believable as pulling the rope and having it fire right it up.
Finally on to my question!
How bad is it to start a frozen machine in this extreme cold? Is it not the concern that is in four stroke engines with wear due to lack of lubrication?