Extended Performance Replacement Battery for select Asus Laptop / Notebook / Compatible with Asus U36SG, U32, U32J, U32JC, U32U, U36, U36J, U36JC, U36S, U36SD, U44, U44S, U44SG, U82, U82U, U84, U84S, U84SG, X32, X32U, A41-U36, A42-U36 ( 8 Cell, 4400 mAh )