A right-hand positive (RHP) car battery is sometimes designated as digit “0” in technical documentation.
Below is a schematic showing the standard (direct) polarity and how to correctly identify an RHP battery:
⚠️ Do not confuse battery polarity with battery sizes (Asian or European). These are two separate concepts and do not affect how a battery’s polarity is determined.
Polarity classifications (right-hand positive or left-hand positive) apply to batteries used in passenger cars and minivans weighing up to 1.5 tons. When selecting a battery, focus on polarity type rather than size.
(See also: What is a left-hand positive battery?)