a big battery lasts longer then a small one cranking wise. think a thermo king drycell has 1200 or 1300 of CCA. that bi$ch is going to turn or blow something, but for a hafty price.. 300 CAD with a 10 year replacement warrenty. down fall would be your charger has to charge it all back up again.
Agreed - always get the largest batteries you can fit in the car, but for $300 I think you can walk out of Costco with 2 Optima batteries that will give you 1700 CCA.
hook those puppies up in series and that'll start the car REAL quick... but probably blow the starter :lol: i've thought of getting an isolator and putting a battery in the trunk for some extra juice, but after i got a new starter (and still using the old battery) i haven't had any cold starting issues other than the fact that the motor is getting a bit tired.
at work i just leave it plugged in for a whole shift... :lol: did that at least 20-30 times last year without issue, and supposedly my heater still works. just remember that its thermostatically controlled and *shouldn't* burn itself out. but as with any element there's always that chance....