High Performance Lithium Ion Main Battery Pack for Compaq Presario 2820AP OEM Part # equivalent: 281233-001, 281234-001, 279665-001, 280206-001, 280207-001, 278418-B25, 281766-001, 289053-001, 291369-B25, 338669-001, 337657-001, CQ-EN800L, CQ-P1500L, CQ-P900L, HP-NW8000L, CQ-EN1000VL, HP-NC6000L, HP-NX5000L, DG105A-BTI, B-5538 |