IMPORTANT: Please fully charge the battery for 36 hours before use. The battery is in factory sleep mode for safe transportation; it will not be recognized by your laptop until activated. This is normal and NOT a compatibility issue. Specification: Dell laptop WDX0R - Battery replacement;Battery model: WDX0R,;battery type: Li-ion battery,;voltage: 11.4V;capacity: 42Wh/3600mAh;battery cell: 3 cells;package contents: WDX0R battery*1,3*screwdrivers of different specifications, certificate Compatible for DELL Inspiron 13 14 17 5000 13 14 15 7000 series, 15-5568D-1325S, 15-5568D-1845S, 5538 5565 5567, 3180 3190, Dell Vostro 3480 3481 3583 series Compatible P/N:WDXOR P69G P69G001 P58F001 P58F FW8KR CYMGM 8YPRW 0WDX0R 3CRH3 T2JX4 C4HCW 0C4HCW FC92N Y3F7Y 0Y3F7Y Stability and safety: Our batteries have undergone numerous tests. The industry standards are set as the minimum requirements. They are equipped with overcharge and overdischarge circuit protection, as well as temperature over