Lead acid battery inside truck?

[dwh]

seeing this topic exhumed, I now see why dwh excreted so vigorously on my rear electrical project in the 12v subforum.

Obviously you don't see why, so I'll explain it one last time before ignoring any further baiting on the subject...

You asked for comments, specifically "inputs". It was in the title of the thread.

Any comment you got other than, "Oh! Neato! Love your awesomeness!"; you crapped all over the poster in your typical snide and snarky fashion (which anyone who reads the thread can plainly see).

And so...

Screw you. And the horse you rode in on.




[Seeing as I've helped a lot (enough that I keep having to empty out my inbox) of people who asked for it in PMs (in fact I've never turned down a request for help or failed to answer any question completely, fully and - if need be - repeatedly until the person asking finally "got it"), I have ample proof that my pedantic antics are in fact appreciated by more people than those few who get butthurt over it.

So your repeated weakassed attempts to "put me me in my place" simply bounce off the impregnable armor of my certain belief in my own rectitude.]



Grow up. Get over it.

'Nuff said.

 

[highdesertranger]

"air becomes hydrogen"
uhm what. I would like this one explained. one might say hydrogen is produced, but air becomes hydrogen. I want to see the chemical formula on that one. highdesertranger

 

[dwh]

Hrmm...must be getting old. I'd actually forgotten about this thread and had to go back over it for a quick refresher. In the course of which I realized I never actually revealed the last of the "slimy traps" I set just to see which "experts" were really paying attention.



So here it is:

240 cu' * .4 = 96 cu' to reach 4% saturation.

<raucous_buzzer>

Wrong!
96 cu' would be 40% saturation, not 4%.




What can I say - I'm a lowdown dirty polecat who likes tests.

 

[Buliwyf]

"air becomes hydrogen"
uhm what. I would like this one explained. one might say hydrogen is produced, but air becomes hydrogen. I want to see the chemical formula on that one. highdesertranger

Come on, you know what I meant.

The battery produces hydrogen as it's overcharged. Since the battery has a low fluid level, a dangerous amount of hydrogen is allowed inside the batter. It's not just harmless air in there at this point. A little bit of H in a full battery is just a puff, a half empty battery filled half way up with H is an impressive explosion.

But in your case forget it. Mount a lead acid battery right under your nose. Make sure you use a cheap charger and smoke over it.

 

[rayra]

See what I'm talking about? They're like a bot. The Pedant 9000.


An entire generation of lazy stoned hippies flogged their VW Bugs around the nation with unsealed lead acid batteries under the back seat for decades without burning up like the Hindenburg. Hydrogen is the toughest gas to seal in effectively. And in the case of a charging battery that's exactly what you DON'T want to do. It works its way up and out of just about anything. It takes deliberate effort to contain and concentrate it, and intermix it properly to get a big boom. Those videos being used as scarum are no more real than the faked video about chevy saddle tanks. Or half the crap on Mythbusters. Their setup(s) are deliberately contrived to create that boom. And folks that don't know much about the real world / history fall right for it. And pedants peddle it, with many of them having zero (self-)awareness of the difference between possible and probable.

Like I said earlier, protect your battery from other things damaging it or coming in contact with its terminals. The rest is nonsense.

 

[goatherder]

What an absurd load of bullsh!t. Typical web forum over-thinkage and fearmongering.

I've owned 5 BMW cars, and four of them had the battery in the trunk, in a tiny little space with a lid over it...with a tiny little vent tube exiting the floor of the compartment. One of them (an $80k flagship 750iL) had the battery under the rear seat. With no special venting that I can recall. You don't really hear of any factory recalls or class-action lawsuits due to battery explosions...even when people SMOKE IN THE CAR! (and we all know how dangerous THAT is, don't we?)

I strung together a pair of Costco golf cart batteries, then parallel'd them with the existing pair of start batteries, connected via HF 4ga jumper cables at the back of a 12v inverter. I also connected a 12v marine charger to the same point. No other connections or isolator switches. Parked them in a Costco plastic storage tote with interlocking lid, located under the folding bed. They keep the beer cold all nite (dorm fridge), run the sink pump and help start the bus in the morning. No adverse effects from having them inside the cabin at all. Dirt simple, and it works.

And the only hydrogen I ever smell is hydrogen sulfide. From the beans I had for dinner. Which CAN accumulate in explosive concentrations. I once had a friend who singed his eyebrows...but that's a story for a different time.

 

[dwh]

Apples and oranges.

A car or light truck might use 1/5 amp*hour (worst case 3/4 amp*hour) to start the engine. That tiny amount is recharged in minutes.

Electrolysis is what splits the water into hydrogen and oxygen. That happens during charging.

So for a cranking battery, we're talking a couple minutes of very low amp charging (very little electrolysis).


Which is a very different thing than many hours of higher amp charging (lots more electrolysis) for a deep cycle house battery.


Apples and oranges, so stop telling me how it's, "been dun fur yeers". Yea, it has. The apples have. They don't do the oranges that way.

 

[rayra]

Back under your Bridge you boring pedant ********.

 

[rickc]

Hi folks: This thread caught my attention; shame it got so nasty. I know that there are vehicles with batteries inside the cabin by design, albeit very, very few. As well as any concerns regarding hydrogen, another concern should be high amp cables and the potential for fire on the wrong side of a fire wall. In past projects, I've kept house batteries in the engine bay if there is room, under the truck or in a pick-up bed but never in the passenger compartment, same for any wiring carrying high loads.

 

[dwh]

Back under your Bridge you boring pedant ********.

Request denied.

 

[Hillbilly Heaven]

JHC!!! Glad I missed out on this one. It has revealed an obvious pattern.