Discharge rate vs battery life

[fw12]

Battery chemistry: LiFePO4

Battery 1:
12V 200aH
Max discharge rate: 200A

Battery 2:
12V 200aH
Max discharge rate: 40A

Both battery banks are identical, except that bank 1 is high drain.

Question:
Let's say I decide to drain both banks at a rate of 20A. Does it mean that bank 1 would last longer than bank 2?
And by "last longer", I mean the number of years before the batteries die.

[NEOH]

Insufficient information....
Please provide URL links to mfr website & datasheets.

[fw12]

Insufficient information....
Please provide URL links to mfr website & datasheets.

Thanks for your response.
This is not specific to any product.
I'm just trying to understand the principle.
But if you insist on a particular product, pick one to illustrate with.

[SunEagle]

Battery chemistry: LiFePO4

Battery 1:
12V 200aH
Max discharge rate: 200A

Battery 2:
12V 200aH
Max discharge rate: 40A

Both battery banks are identical, except that bank 1 is high drain.

Question:
Let's say I decide to drain both banks at a rate of 20A. Does it mean that bank 1 would last longer than bank 2?
And by "last longer", I mean the number of years before the batteries die.

Theoretically battery 1 should last longer at that drain rate but to really understand the lifespan of a battery would be to read all of the technical data provided by the battery manufacturer.

Unfortunately even with the spec sheet your battery may still act differently then expected due to a number of variables.

[fw12]

even with the spec sheet your battery may still act differently then expected due to a number of variables.

Thank you.
All other variables being the same, I believe battery 1 should last longer due to more robust components.
Ultimately, only a test could prove it.

[SunEagle]

Thank you.
All other variables being the same, I believe battery 1 should last longer due to more robust components.
Ultimately, only a test could prove it.

I agree with you. The final decision for me would be the cost over the lifetime of a battery. That is a choice you have to make.

[NEOH]

Thank you.
All other variables being the same, I believe battery 1 should last longer due to more robust components.
Ultimately, only a test could prove it.

If all else stays the same ( like overall size ) then ...
What if the larger metal components ( that support the huge amps ) leave less space inside for active material?
Less active material = fewer cycles = shorter life.

[Ampster]

If all else stays the same ( like overall size ) then ...
What if the larger metal components ( that support the huge amps ) leave less space inside for active material?
Less active material = fewer cycles = shorter life.

What little I know of the subject has been drawn from the Teslamotors forum. Fundamentally the difference in the high drain (power density) cells used in the cars and those used in Powerwalls (energy density) is almost entirely in the electrolyte. Consider that anecdotal but we do know the form factor remained the same until recently. As far as shorter life i think the guaranty is very similar so somehow they may have struck a balance.