ThunderMax Hard Starting Issues Corrections - Manual (Page 3)

So.... plenty to digest with all of these potential problems to investigate.
Maybe they are all NEW.
Don't assume even NEW batteries are good; they must be fully charged with a properly functioning
charging system.
NOTE: The best batteries we have found to date are the H-D units which are manufactured by Deka.
Most aftermarket batteries have inferior terminal connections and have proven less reliable.