How iPhone batteries fade with charge cycles

Median battery health by completed charge cycles, traded-in iPhones only. Dashed line: Apple's 80% service threshold.

envirofone
60%70%80%90%100%1-100101-250251-500501-800801-1,2001,201-2,0002,000+1-100 charge cycles: 100% median health across 1,314 traded-in iPhones101-250 charge cycles: 99% median health across 1,424 traded-in iPhones251-500 charge cycles: 89% median health across 3,957 traded-in iPhones501-800 charge cycles: 86% median health across 7,746 traded-in iPhones801-1,200 charge cycles: 81% median health across 10,799 traded-in iPhones1,201-2,000 charge cycles: 77% median health across 10,914 traded-in iPhones2,000+ charge cycles: 74% median health across 1,259 traded-in iPhones
Source: Envirofone iPhone Battery Health Index, September 2026, envirofone.comSee the full index →