Fresh air to ... the battery ?

[comptiger5000]

Tollo - Many vehicles use temperature compensated charging to avoid that problem. My Jeep has a temp sensor in the battery tray to monitor battery temp. In hot summer weather, the voltmeter sits around 13.8 or so normally, a little less if the engine bay is really heat-soaked. In cold winter weather, it's around 14 - 14.1 due to the colder battery.

[tollo]

Originally Posted by comptiger5000

Tollo - Many vehicles use temperature compensated charging to avoid that problem.

I think some vehicles use temperature compensated charging and many does not. ... (I might be also wrong) How common is it ?

High temperature damage battery even when temperature compensated charging is used. (cool or "room temperature" is better)

euromodder - Cold temperature lowers the capacity of the battery. You won't probably not see any difference in battery voltage if you don't have temperature compensated charger.

Cold battery has less energy loss. That is the reason for better total FE.

[euromodder]

I've left a gap in my grill block, right where the intake to the battery is located.

Photo

[Frank Lee]

It's so common I've never heard/read/seen it before

[mf70]

Another issue with grille blocks on a V50 is the ECM, which sits right behind the grille in front of the engine block.

[RobertISaar]

chrylser loves the temp compensated charging concept..... i've seen it on no other vehicles though. the earlier models have a temp sensor inside the ECM itself, later seems to have moved it closer to the battery.

but, yes, high temps will reduce battery life. cold temps are temporary reductions in capacity/output/input. you'll see this in some vehicles that moved the battery into the passenger cabin that in otherwise similar vehicles, the underhood battery might last 5 years, while one hidden underneath the rear seat lasts 10. YMMV though.

[Xist]

Originally Posted by RobertISaar

but, yes, high temps will reduce battery life. cold temps are temporary reductions in capacity/output/input. you'll see this in some vehicles that moved the battery into the passenger cabin that in otherwise similar vehicles, the underhood battery might last 5 years, while one hidden underneath the rear seat lasts 10. YMMV though.

I do not know much about cars, I have only seen that on HMMWVs, and it is under the front... "passenger."

[Cobb]

The Hindenberg blew up cause it was coated in rocket fuel, not filled with hydrogen.

Originally Posted by Old Tele man

...yep, HYDROGEN (ala' "Hindenberg") gas...which might be an idea to the HHO generation advocates.

[gone-ot]

Originally Posted by Cobb

The Hindenberg blew up cause it was coated in rocket fuel, not filled with hydrogen.

The question remains: "...which occurred first? (a) the spark igniting the paint or (b) the spark igniting the free hydrogen gas?"

However, because hydrogen gas is far more easy to "ignite" than the metallized paint, your question seems mute [check ignition energy requirements].

[redpoint5]

Replace your battery with a Supercapacitor bank!