3 For Apple Watch 3 Battery 279mAh 38mm iWatch A1848 Internal Replacment Battery Description: This is a new battery for the Apple Watch 3 38mm and will replenish your battery life back to factory fresh standards. If your Apple Watch 3 38mm has had a hard life and doesn't last as long as it used to, or it has had a battery failure and no longer powers up then this part could be for you! Compatibility: Apple Watch 3 38mm A1848 Package includes:1 x battery for Apple Watch 3 38mm Important: 1. New Lithium-Ion batteries must be FULLY CHARGED and FULLY DISCHARGED 2 to 3 times, before being FULLY CONDITIONED. 2. The light signal may not always indicate a full charge, but the battery will be at full capacity after 3 complete charge and discharge cycles. 3. Complete charging (upon phone is turned off) and discharging will extend battery life. 4. After you go through 2 to 3 cycles, you'll never have to condition your battery again!