HP 669831-001 - Battery (Primary, Long Life) - 6-cell lithium-ion (Li-Ion), 2.55Ah, 51Wh (RC06051XL1) Retail
HP 757661-001 - 6-Cell FP06 FPO6 Battery for HP ProBook 440 445 450 455 470 G1 G2 Sale $79.00 Retail $99.00