Hybrid Battery and High Water

I'm seriously condsidering getting a hybrid Maverick. My neighborhood experiences street flooding. Can anyone say or point me to an information source on how well the batteries are protected from going through high water? I'm afraid that going through urban flooding may cause damage and I've not found anything out about the specs of how the batteries are incased, etc. I'm also unsure if I did drive through high water and damaged the hybrid battery if the warranty would cover it. Thanks for any help you can give!