Replacement Battery For Apple iPod Nano 4th Generation - 616-0407

With this replacement battery, you can get long hours of standby time without frequent recharge. A long enough battery life is important to satisfy your daily use. 
Model Number: 616-0407
Voltage: 3.7V
Chemistry: Lithium-Ion 
Compatible With: Apple iPod Nano 4th Generation
Condition: Brand New
Important: New Lithium-Ion batteries must be FULLY CHARGED and FULLY DISCHARGED 2 to 3 times, before being FULLY CONDITIONED. Please remember that a new Lithium-Ion battery's full performance and longevity are only achieved after 2 to 3 complete charge and discharge cycles. After you go through 2 to 3 cycles, you'll never have to condition your battery again!