For SONY MZ-N10/E10. Battery type: Li-ion. Battery Capacity: 350mAh/1.3Wh. (Apply for Battery Only). BT , AB ,PH20-26, PH30-35, KA27-28, FK20, PA34-39; PH49, PH50; HS9; PH42-44, FK18-19, PH17-19?. Compatible Models( Ctrl + F for fast search ur laptop model).