Hi,

I have seen batteries explode on trucks but never on small vehicles. It can happen because of loose conections on the battery terminals or a defective battery. I think there is a very small hole on each battery cap to release pressure.

You should also wash the battery area very carfully with water mixed with soda to remove any acid and prevent corrosion.

It's a very rare situation. Have you talked to the battery manufacturer?

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Juan
1995 E320 Sedan
2008 Ford Escape
RC Helicopter