Honda HR-V 2022 Owner's Manual page 573

Charging the Battery
Disconnect both battery cables to prevent damaging your vehicle's electrical system.
Always disconnect the negative (–) cable first, and reconnect it last.
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When you find corrosion, clean the battery terminals
by applying a baking powder and water solution.
Clean the terminals with a damp towel. Cloth/towel
dry the battery. Coat the terminals with grease to
help prevent future corrosion.
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