Hello John Watkins,
Do you mean an easy way to calibrate current or reset AH? There are no other ways to calibrate current and voltage.
If you want to reset AH, please move the yellow cursor to “LOP”, once the yellow cursor is invsible,just short press button OK , then the time will be cleared, the AH value will be zeroed or filled.
After powering off, WH will be cleared automatically.
Best regards.