A cycle is a full charge and discharge. If you use 50% of the battery and charge it twice, that counts as one full cycle. https://support.apple.com/en-us/HT201

A cycle is a full charge and discharge. If you use 50% of the battery and charge it twice, that counts as one full cycle. https://support.apple.com/en-us/HT201585 https://support.apple.com/en-us/HT201585