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Battery Drain: Why Standby Time Matters | Posts 16+

 
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garth.brooks
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Post07-06-2004, 8:46    Subject: Battery Drain: Why Standby Time Matters Quote

Sure, here is the translation of the text from German to English:

'Hi Gremlin,'

I've already tried the 'standby ventilation' method by directly connecting the fan motor to the battery via a relay. The prerequisite is that the air vents are properly positioned when the car is parked.

However, this will kill the battery within 1-2 years. Car batteries are not designed for frequent charge cycles and have a lifespan of approximately 30 cycles. Even if you only partially discharge them, it will still shorten their lifespan – the battery will eventually fail. This is a problem that all electric vehicle manufacturers are aware of. Charging the car battery from an external source just a few times, even if you don't fully drain the battery, can cause it to degrade after 2 years.

Better and cheaper: The air conditioning runs for just 3 minutes, which is enough to reach the same temperature as with the standard ventilation system. It's still quite warm, but it's better than getting in when it's extremely hot.


Translated on 01-08-2026, 5:16.
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WarLord
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Post08-06-2004, 22:16    Subject: Battery Drain: Why Standby Time Matters Quote

Okay, I'll just open all the windows for a bit.

Best regards, WarLord.


Translated on 01-08-2026, 5:18.
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Gremlin
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Post09-06-2004, 8:28    Subject: Battery Damage: Why Idle Ventilation is Bad Quote


But that will kill the battery within 1-2 years. Car batteries are not cycle-resistant and have a lifespan of approximately 30 cycles. Even if you only partially discharge them, it will still take longer, but the battery will eventually fail.

Thankfully, my batteries don't have that problem... neither the generic ones I had in the box, nor the original ones in my Octavia.

It's like with the hummingbird. Supposedly, it can't fly because its wings are too small. But it doesn't know that... and it flies anyway.


By the way: for really tough cases, you should use an Optima Yellow.

CU Gremlin.


Translated on 01-08-2026, 5:19.
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