You can recharge your juice pack case for over 500 full cycles. A full cycle is when you recharge the case from 0% to 100%. Partial cycles, like charging from 25% to 100%, will not count as a full cycle until all of the partials equal 100%. After 500 full cycles, the battery in the juice pack case may provide less than its original capacity. This is normal for any product with a lithium polymer battery.