Let's talk Batteries
I too have had poor luck with the Interstate batteries for the most part.
I understood this as well.
I too have had poor luck with the Interstate batteries for the most part.
I read the following on several sites.
"To start a 4-cylinder gasoline engine, you will need approximately 600-700 CCA; 6-cylinder gasoline engine, 700-800 CCA; 8-cylinder gasoline engine, 750-850 CCA; 3-cylinder diesel engine, 600-700 CCA; 4-cylinder diesel engine, 700-800 CCA; and 8-cylinder diesel engine, 800-1200 CCA.... colder climates the higher CCA rating the better, due to increased power required to crank a sluggish engine and the inefficiency of a cold battery. As batteries age, they are also less capable of producing CCAs. "
If that's true, then according to the last sentence theoretically the higher cca batteries SHOULD last longer.
Batteries are constructed differently depending on the part of the US they are distributed. "Southern" batteries have a bit weaker electrolyte or specific gravity or somesuch. Something to consider prior to moving across country, a "Northern" battery bought in Minnesota may not be suitable for Texas climate, and the reverse is probably also true.
High temperature is the great enemy of batteries. They often fail at the first cold snap of the season, that's true but it's the summer heat that did them in. That, and all the BS parasitic loads common with modern trucks.
Ford Trucks for Ford Truck Enthusiasts
Modern vehicles with all the modules and gee-gaws don't "go to sleep" for a half hour or so after shutdown, and during this time are drawing near headlight levels of electrical current! Jeeze Louise, that's dumb.
Anyway a heavily sulphated battery will choke when temperatures eventually get cold and is tasked to perform. I've often wondered that if batteries came in a clear plastic case, whether some of the trouble could be avoided.
"To start a 4-cylinder gasoline engine, you will need approximately 600-700 CCA; 6-cylinder gasoline engine, 700-800 CCA; 8-cylinder gasoline engine, 750-850 CCA; 3-cylinder diesel engine, 600-700 CCA; 4-cylinder diesel engine, 700-800 CCA; and 8-cylinder diesel engine, 800-1200 CCA.... colder climates the higher CCA rating the better, due to increased power required to crank a sluggish engine and the inefficiency of a cold battery. As batteries age, they are also less capable of producing CCAs. "
If that's true, then according to the last sentence theoretically the higher cca batteries SHOULD last longer.
I think application is more important than engine. Why does a 2011 F-150 5.0L V8 get a standard 750CCA battery while the 6.2L Super Duty gets a 650CCA? The answer isn't that the 5.0L is harder to crank over (although it does have higher compression) but rather, the F-150 has electric power steering and the Super Duty does not.
Does the diesel need 1500CCA of battery to start? Nope, it's primarily because of the 8 glow plugs which can draw a massive amount of amperage. Yes, the higher compression diesels take a little more cranking amps to start, but it's not as much as you might think.
I have no idea if a higher CCA battery will last longer. It would seem to me there must be a point in which higher CCA's is not beneficial. In my experience, the output of the alternator is critical to battery life. A strong alternator not only recharges the battery even on short runs, but also supplies all of the needed current for any accessories the vehicle is running.
I had a mid 90's Mercedes E-Class which came with a large battery, but only a 90A alternator. Being a Mercedes, there were quite a few accessories which dragged the battery down while running. At low speeds, the alternator did not seem able to keep up with heated seats, headlights, fog lamps, rear fog lamps, audio system with separate amps, rear defrost, mono-wiper system, heated mirrors, heated windshield washer nozzles, HVAC system, and engine cooling fans. That vehicle went through batteries.
On the other hand, we had several other European vehicles (VW, Audi, Land Rover, etc) with 150A Bosch alternators...those vehicles never had battery trouble.
I'm pleased with the high alternator output of all of the newer Ford trucks.
a bigger alternator is better then a big CCA battery.. my opinion.
the faster the battery can recover to Full, the longer the battery will live.
my Ram with its 11 year old battery had a 155 amp alternator.. and a 650cca battery.
.
and in the 1960's a 450cca battery and a 35 amp alternator..
OR 65 amps with air conditioning.
a bigger alternator is better then a big CCA battery.. my opinion.
the faster the battery can recover to Full, the longer the battery will live.
my Ram with its 11 year old battery had a 155 amp alternator.. and a 650cca battery.
.
and in the 1960's a 450cca battery and a 35 amp alternator..
OR 65 amps with air conditioning.
I'm kind of skeptical of American alternator output ratings, though. Look at the alternator on your truck - standard is a 157A, some have 185A, some have 200A, and some have a 200A and a 157A. The F-150 has a 220A. There is nothing special about the appearance of these alternators...they look pretty much the same as your standard internal fan alternator from 20 years ago.
Take a look at the 150A Bosch on your average Audi or BMW...you'll notice it might have dedicated air duct work which brings cool air from the grille to the rear of the alternator. A 2003 Range Rover has a 170A Bosch alternator which is liquid-cooled. The point is that an alternator can only make those high ratings when it is cool, and also only during certain engine speeds.
While I don't doubt my diesel might make a combined 357A when the engine is cold and RPMs are up...I doubt the numbers are nearly as impressive when idling in 90F heat.















