Risk of poisoning with 12V Battery not vented properly

[Phimosis]

Could/would a short do this?

I'm skeptical too. This is very rare.

A short, as in a high drain on the battery? No. That would lower the battery voltage. H2S is made when driving the battery voltage very high, such as when your NOCO genius battery charger is put in desulfation mode and it’s driving 16 volts into a 12 volt battery.

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[Mavster Mechanic]

A short, as in a high drain on the battery? No. That would lower the battery voltage. H2S is made when driving the battery voltage very high, such as when your NOCO genius battery charger is put in desulfation mode and it’s driving 16 volts into a 12 volt battery.

My maverick pumps in 15.4v.
Almost Daily.

 

[HeyBales]

My maverick pumps in 15.4v.
Almost Daily.

I was impressed the BMS earlier this year when it was clear I had at least 1 if not 2 bad cells - backed off the charging rate and time even worse than normal, for exactly that issue of overcharge on the good cells I'm convinced.

Which of course aided greatly in it's timely death.

https://www.batteryuniversity.com/article/bu-403-charging-lead-acid
"Aging batteries pose a challenge when setting the float charge voltage because each cell has its own unique condition. Connected in a string, all cells receive the same charge current and controlling individual cell voltages as each reaches full capacity is almost impossible. Weak cells may go into overcharge while strong cells remain in a starved state. A float current that is too high for the faded cell might sulfate the strong neighbor due to undercharge. Cell-balancing devices are available compensate for the differences in voltages caused by cell imbalance."


Pretty sure this is why my SOC took a nose-dive below 40% (Ford scale) and battery needed warranty replacement 3 days later.
Had 4 straight days of 1.5 hrs driving daily.
Float charge was quickly reached but must have been kept up the entire time - on a battery already in a bad state.

 

[Phimosis]

My maverick pumps in 15.4v.
Almost Daily.

Ok, fair enough. I thought you meant a short in the car’s wiring, causing a massive discharge of a healthy battery, not an internal short in a damaged battery, leading to a thermal runaway.

A thermal runaway of a lead acid battery would indeed produce a lot of H2S in a short period of time that would lead to the scenario described in the article.

For some reason when I read your comment by brain didn’t analyze both internal short and external short.

 

[Propane Burning Man]

So, based on a lot of the comments there would have to be a major malfunction in the charging system or battery AND the vent tube would have to be disconnected AND the driver would have to keep driving with the rotten egg smell AND feeling sick AND with the windows rolled up? Impossible for me to believe this was an accident. Sounds more like suicide. Which unfortunately happens too much in our world today. Please everyone get healthy. Make it a priority. It's worth it.

 

[Phimosis]

So, based on a lot of the comments there would have to be a major malfunction in the charging system or battery AND the vent tube would have to be disconnected AND the driver would have to keep driving with the rotten egg smell AND feeling sick AND with the windows rolled up? Impossible for me to believe this was an accident. Sounds more like suicide. Which unfortunately happens too much in our world today. Please everyone get healthy. Make it a priority. It's worth it.

Yup. In probabilities, it’s risk 1 x risk 2 x risk 3, etc to get the final probability. So 0.001% chance of a battery with thermal runaway x 0.1% chance of the vent tube being disconnected x 0.01% chance of him leaving the windows rolled up despite a nauseating, putrid smell = a .000001% chance of all of these factors happening. That would be a 1 in 100 million chance. But it has to be rarer than that. If it was a 1 in 100 million chance, it would be happening 3x a year in the US and we would be hearing about it a lot more. This is the first time I’ve ever heard of this happening in my life.

 

[mspmms]

Risk of poisoning with 12V Battery not vented properly

Not the only risk with the Maverick

Meme => link

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