Quote:
Originally Posted by tollo
Cool battery makes better FE and longer battery life.
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The battery has been in there for almost 5 years.
I've only used the preheating maybe 1 or 2 times.
In winter it starts easily without using preheat, even though the car is not kept in a garage.
Quote:
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When battery get hot the voltage of the battery goes down and battery gets overcharged. (I might say that overcharging is just boiling water) Cool battery has higher voltage and alternator won't overcharge it.
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I could monitor the voltage using the Scangauge and see if there's any difference.
Quote:
Originally Posted by Old Tele man
...yep, HYDROGEN (ala' "Hindenberg") gas...which might be an idea to the HHO generation advocates.
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Fortunately - or unfortunately depending on your PoV
- a car battery won't produce nearly enough hydrogen to have an effect on FE.
But in an open engine compartment, battery ventilation surely would be better than in an enclosure ?