Leaking battery

[BLACK 346]

I don't understand why you would buy a battery that has the incorrect dimensions and have to make a modification for it to fit. Why not buy the same type of battery(optima), with the correct dimensions?

I am assuming only reason is because the one that requires minor mods is higher spec?

[Dickie Knee]

i don't understand why you would buy a battery that has the incorrect dimensions and have to make a modification for it to fit. Why not buy the same type of battery(optima), with the correct dimensions?

D27F 830 cca

D35 650 cca

[dgp]

D27F 830 cca

D35 650 cca

And what does the car actually require to start?

[BLACK 346]

And what does the car actually require to start?

I can see what you are saying, might be overkill and maybe car does not even utilise the extra cca.

[Micks]

What's the std cca around 480? Being a Calais would go approx. 20% over oem anymore could be excessive.

[BLACK 346]

Not just the CCA that separates them.

35 - CCA: 620 RC: 100 AH: 48
27F - CCA: 830 RC: 140 AH: 66

[BLACK 346]

What's the std cca around 480? Being a Calais would go approx. 20% over oem anymore could be excessive.

So going off that maths, the 35 would be your pick? No mods for that one either.

[Dickie Knee]

Answer : enough to start the car when required

It's nice to know that if I leave the car for a couple of weeks or more without heading out to start the car and have it not start or only just start.

I also changed the battery tray and mounting system in my WH Caprice to the VZ type allowing an increase from 500 to 600 cca. Holden thought it was good enough for the police to go to 600 cca why not me.

It is just a bit of over engineering. There is an argument that using a bigger capacity battery is less taxing on the battery and it will last longer than the manufactures recommendation and I have been getting better than normal life expectancy out of batteries from this over engineering for years. Cars are built with a fine balance of cost effectiveness and requirement leading manufactures to use the minimum requirement.

While it may not be needed to start the car under normal conditions it is nice to know that the extra is there. Especially with history of VE high power usage when parked.

[Woodchukka]

I can see what you are saying, might be overkill and maybe car does not even utilise the extra cca.

Don't just look at the CCA there are other measures of capacity such as the Amp hours (A/h) and the Reserve capacity of the battery. A/h is a calculated measure of the batteries capacity written as how many amps can the battery supply over 1 hour however as it is a calculation the reserve capacity is a better measure as it is a set discharge rate of 25 amps with the time taken for the battery to reach 10.5 volts. The D27F has 66A/h and a reserve capacity of 140 minutes where as the D35 has 48A/h and a reserve capacity of 98 minutes. So if you liked to run a stereo then the D27F would be the choice. Also CCA is the capacity of the battery to supply the rated CCA over 30 seconds. If a battery has 1000 CCA doesn't mean it will feed that to the starter. It will only give what is demanded. I.e. if you turn on a light it will not receive 1000 amps just what is demanded to run it.

[XUV]

And what does the car actually require to start?

I'm glad you asked , 270 according to optima below,

also those CCA are at 0 deg fahrenheit which is -17 , you've got close to a 1000cca at normal temp in a 35 optima



also Black 346 check this old thread out http://www.ls1.com.au/forum/showthre...ry-replacement

[BLACK 346]

I'm glad you asked , 270 according to optima below,

also those CCA are at 0 deg fahrenheit which is -17 , you've got close to a 1000cca at normal temp in a 35 optima



also Black 346 check this old thread out http://www.ls1.com.au/forum/showthre...ry-replacement

Cheers mate, I found and read that thread a few days back, is a good read

[BLACKVE]

I also changed the battery tray and mounting system in my WH Caprice to the VZ type allowing an increase from 500 to 600 cca. Holden thought it was good enough for the police to go to 600 cca why not me.

That's what I've done a 600cc AC delco battery, they seem to last heaps longer than others.

[BLACK 346]

That's what I've done a 600cc AC delco battery, they seem to last heaps longer than others.

He is talking about vt-vz with the 600cca, people are going 800 plus with VE I am thinking I might settle for the 720cca red top for what my car does, can get for $270 delivered, battery world wanted $450.

[XUV]

He is talking about vt-vz with the 600cca, people are going 800 plus with VE I am thinking I might settle for the 720cca red top for what my car does, can get for $270 delivered, battery world wanted $450.

Can't believe places are still asking stupid prices,

I use to bulk at optima when they were $375.00 plus and use to run delkor 610, great bang for buck battery, they make a 680cca that looks the goods.

but a tractor needed a battery and 35 Redtops came down to $249.00 delivered, I thought why not and good to see they havn't gone up much$

[Micks]

Best rule of thumb is buy the largest most suitable battery you can afford.
Like Rod we have a Calais V though in a sportswagon it's just gone 5yrs & still on oem Batt, hasn't really missed a beat though car is generally used 3 times a week.