Battery smell when accelerating??

smokey tennis shoe

Got a 2008 precedent, in excellent condition. It has 4 trojan 12 volt batteries, that are about 8 months old now.

It doesn't get driven much. Maybe once a week.

I charged it 2 days ago. Yesterday i topped off the batteries a little, not much.

Today i was driving it, and noticed if i stomped the pedal to the floor, i would get that sulfhur smell. Then it would go away.

So i stopped, ans after lifting the seat, could tell the smell was coming from the passenger side.
So i popped oped all the battery caps, and all water was good. But i did notice when i popped the 2 passenger side batteries, the smell was stronger.??

Any ideas what is causing this smell, pretty much only when stomping to the floor?

BGW

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crash test dummy

water bubbled out and is around passenger batteries
it may be getting hot due to loose nuts while driving
rinse it with baking soda and tighten nuts
this is just a guess

theboss20

Even new batteries can be bad...I would put a voltmeter on each battery to be sure they are all equal...if one battery is shorted it will smell because the charge going into the battery will be more than it can handle and actually will be overcharging that battery....because it is a 10v battery taking an 16v charge.