Larger CCA battery

[fonman_4859]

I use one on my garden tractor during the winter and my brother uses one on his JD 4020 to keep the float voltage topped off haven't had any problems with either one of them. They seem to work ok even when they get wet.

[VT_Hokie]

Originally Posted by oliver28472

On the wife's VW, the battery will go down within 2 days if it don't get some help. We were gone earlier this month for 10 days. I left the solar charger place in the sunroof and plugged in. Started right up when we got home. This charger will not overcharge the battery and it came with the car. I know we shouldn't have to use it but the sad truth is the dealer couldn't find anything wrong with the car even though it died on their lot.

My wife has a 03 jetta and one of those solar panel came with it. Gets a lot of use in the garage Just a jab in the dark, did they check the trunk light switch? This will drain a weaker battery over time if the light is stays on. If they were worth their salt they should have run an amp meter and start pulling fuses to see what circuit is causing the most drain. Did you ever try a new battery??? There really is no reason why you should be carrying that charger around in a new car..

VT

[DieselPower]

Higher CCA usually means shorter battery life. Higher CCA is obtained with more plates in the battery, more plates means more heat which means shorter life.

[1m21]

Originally Posted by DieselPower

Higher CCA usually means shorter battery life. Higher CCA is obtained with more plates in the battery, more plates means more heat which means shorter life.

What about batteries that don't use plates?

[lambs]

I use a battery tender, mine was about $18 at WalMart. Seems to work well on my MF1010. I also rigged up a 250w heat lamp to sit on the concrete in the garage under the oil pan. You can get a lamp at most big box pet stores; they're commonly used for reptile cages. The bulbs there are expensive though. Got mine at Ace Hardware instead. Brings the oil temp up nicely after an hour. That will help with both oil pressure and cranking speed.

[dieselgeek]

one thing to watch out for when going with higher CCA batteries, and *especially* if you run a deep cycle battery, is what it does to your alternator and voltage regulator.

A large battery, slightly discharged, can easily try pulling 60+ amps from your charging system, pretty much all these tractors are not up to the task with the puny 15 amp alternators. This can kill a voltage regulator quickly, trying to support that much amperage draw after the engine starts.

-scott

[BobRip]

Originally Posted by dieselgeek

one thing to watch out for when going with higher CCA batteries, and *especially* if you run a deep cycle battery, is what it does to your alternator and voltage regulator.

A large battery, slightly discharged, can easily try pulling 60+ amps from your charging system, pretty much all these tractors are not up to the task with the puny 15 amp alternators. This can kill a voltage regulator quickly, trying to support that much amperage draw after the engine starts.

-scott

Won't the alternator just current limit to 15 amps and protect itself? The voltage will drop and the current will drop. An alternator can be overloaded by many things and then the battery starts discharging. At least that's my understanding. If it did not protect itself, then charging a fully discharged battery might damage the alternator as a lot of current would be required during the initial charging.

[California]

Originally Posted by California

[Autozone's] Dual Purpose Marine group 27 is only $59.

[The clerk] said this is what they use on harvesters etc that are parked for months, because a marine battery has less self-discharge than an automotive battery.

It's 1000 Marine Amps, comparable to 1000 automotive Cranking Amps (both @ 32 degrees) which corresponds to about 850 CCA (zero degree cranking amps).

Yanmar specifies 75 amp-hours, this is 115 amp hours.

One year followup:

Works great. It's never had a charger on it since I installed it one year ago. Highly recommended!

[J_J]

Originally Posted by dieselgeek

one thing to watch out for when going with higher CCA batteries, and *especially* if you run a deep cycle battery, is what it does to your alternator and voltage regulator.

A large battery, slightly discharged, can easily try pulling 60+ amps from your charging system, pretty much all these tractors are not up to the task with the puny 15 amp alternators. This can kill a voltage regulator quickly, trying to support that much amperage draw after the engine starts.

-scott

I tend to disagree, The fact is, that the battery will only get what the regulator tells the alternator is available. If the tractor has a 15 amp charging system, then the output to the battery should be 15 amps at low battery condition. As the battery comes up to full charge, the current is regulated down to a trickle. This cycle will repeat itself if all things are normal. A dead or weak battery has low voltage, and the regulator reads this and regulates the current to the battery. A bad regulator will try and over charge the battery, or not charge at all.

[J_J]

Originally Posted by BobRip

Won't the alternator just current limit to 15 amps and protect itself? The voltage will drop and the current will drop. An alternator can be overloaded by many things and then the battery starts discharging. At least that's my understanding. If it did not protect itself, then charging a fully discharged battery might damage the alternator as a lot of current would be required during the initial charging.

Bob,

I know this is an old post, but.

Since the beginning of the car, battery, and charging system relationship, , we have been charging dead battery's. The only problem trying to start a car with a dead or weak battery, is that there is not enough energy left in the battery to turn the starter. If you jump the battery, and it starts, then the regulator system takes over and charges the battery at the max rate until charged.