Specifications: - Voltage: 11.1 - Capacity: 4400 mAH - Brand: Unbranded /OEM Compatible Models: - HP COMPAQ 550 HP COMPAQ 610, 610-VC267EA-BZ, 615, 6720, 6720S, 6730, 6730S, 6735S, 6810, 6820, 6820S, 6830, 6830S Compatible Part Numbers: HSTNN-FB51, HSTNN-FB52, HSTNN-I39C, HSTNN-I40C, HSTNN-I48C-A, HSTNN-I48C-B, HSTNN-I49C, HSTNN-I50C, HSTNN-I50C-B, HSTNN-I54C, HSTNN-I65C-5, HSTNN-IB51, HSTNN-IB52, HSTNN-IB62, HSTNN-LB51, HSTNN-OB51, HSTNN-OB52, HSTNN-OB62, HSTNN-XB52, HSTNN-XB62, KU532AA, NA823ES, NBP6A96, NBP8A97,451085-121, 451085-141, 451085-142, 451085-361, 451085-421, 451085-621, 451085-661, 451086-001, 451086-121, 451086-122, 451086-141, 451086-142, 451086-161, 451086-162, 451086-322, 451086-361, 451086-362, 451086-421, 451086-621, 451086-661, 451568-001, 456664-001, 456864-001, 456865-001, 464119-142, 464119-361, 464119-362, 484787-001, 490306-001, 491278-001, 491279-001, 491657-001, 500764-001, 500765-001, 572187-001, DD06, GJ655AA, GJ655AA-ABH, HSTNN-150C-B, What's in the box Laptop Battery