Hi Jay,
I'm glad to help here! The 5-click on/off feature is primarily a safety feature. Over a long period of time, a battery not in use will drain whether it's on or off, but the drain is extremely minimal, and if you are using the battery regularly, you should not notice it at all. We recommend turning the battery off whenever you need to utilize the safety feature or if you will be storing it over a long period.
Best regards,
Brad