HP 805291-001 - Battery pack (Primary) - 4-cell lithium-ion (Li-Ion), 3.0Ah, 40Wh (RO04040XL-CL) Retail
HP HSTNN-OB88 - Battery (Primary) - Has 6-cells, lithium-ion (Li-Ion), 47Wh, 2.2Ah Sale $45.00 Retail $79.00