Skyvast 11.1V 44Wh High Performance Laptop Battery for Dell Inspiron 14z-5423 15z-5523, Compatible P/N: 2NJNF 8JVDG TPMCF Type: Li-ion ; Capacity: 44Wh ; Voltage: 11.1V ; Cells: 6-cell. Laptop battery replacement for Dell Inspiron 14z-5423 Ultrabook, Dell Inspiron 15z-5523 Ultrabook Compatible P/N: 2NJNF 8JVDG T41M0 TPMCF Grade A cell ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and reliability. Exchange/Refund Policy: Free exchange/refund within 12 months. You can keep the order before we resend a new one and we will email a prepaid return label to help you return the order.