If you are considering purchasing a particular 18650 battery, just remember that…
…there are none with a true continuous rating over 30A.
…there are none rated at 3000mAh with a true continuous rating over 20A.
…there are none rated over-3000mAh with a true continuous rating over 10A.
…pulse or battery company “max” ratings are useless and can’t be used to compare batteries.