- First Name
- Mark
- Joined
- Oct 30, 2021
- Threads
- 119
- Messages
- 6,733
- Reaction score
- 13,150
- Location
- St. Jacob, IL
- Vehicle(s)
- 2021 Badlands | 2020 Escape
The rotten egg smell was your battery overcharging. This can happen if your alternator, voltage regulator, or battery management system allows system voltage to exceed normal range (generally between 14 - 15 volts DC). It can also happen if your battery experiences an internal short. 12V batteries are made up of six cells, with each one supplying two of the 12 volts. If the battery shorts internally then you lose one or more cells. Each cell lost reduces the battery's voltage by two. If you apply a 12V charge to a 10 (or less) volt battery it will overheat, causing the internal fluid to boil. The gas generated by boiling battery acid smells like rotten eggs. I suspect this is what happened to your battery.When the auto zone technician opened the hood the battery was smoking and about to catch fire .
I cannot explain why the rear wheels locked up. That would seem to be unrelated to the battery issue.
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