How to identify battery polarity (positive/negative terminals)?

    Luckily, there is an easy way to identify positive and negative terminals. Take a close look at the battery and locate an indent going around one of the batteries ends. This indent always marks the positive (+) end (terminal) – see HERE. Additionally, the positive (+) end usually has a smaller metal area (cap) – see HERE as compared to the negative (-) end which usually has a larger metal area – see HERE. See our F.A.Q. for details.