Green Cell Battery for HP 550, HP Compaq 6720s etc. 4400mAh, 11.1V Specifications: Brand: Green Cell Capacity: 4400mAh Type: Li-Ion Voltage: 11.1V Cells: 6 Overcharge protection: Yes Replaces: 451085-121 451085-141 451085-142 451085-361 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 464119-143 464119-162 464119-361 464119-362 464119-363 484787-001 490306-001 491278-001 491279-001 491654-001 491657-001 496897-001 500764-001 500765-001 501870-001 572187-001 572188-001 572190-001 572191-001 DD06 DD08 DD08063 GJ655AA HSTNN-139C HSTNN-154C HSTNN-FB51 HSTNN-FB52 HSTNN-I39C HSTNN-I40C HSTNN-I48C HSTNN-I48C-A HSTNN-I48C-B HSTNN-I49C HSTNN-I50C HSTNN-I50C-B HSTNN-I54C HSTNN-I64C HSTNN-I64C-5 HSTNN-I65C HSTNN-I65C-5 HSTNN-IB51 HSTNN-IB52 HSTNN-IB55 HSTNN-IB62 HSTNN-L54C HSTNN-LB51 HSTNN-LB52 HSTNN-OB51 HSTNN-OB52 HSTNN-OB62 HSTNN-XB51 HSTNN-XB52 HSTNN-XB62 KH386AV KU532AA KU532AAR NA823ES NBP6A96 NBP8A97 Compatible with: HP 550 HP Compaq 610 HP Compaq 615 HP Compaq 6720S HP Compaq 6730S HP Compaq 6735S HP Compaq 6700s HP Compaq 6720 HP Compaq 6800 HP Compaq 6800s HP Compaq 6820 HP Compaq 6820s HP Compaq 6830 HP Compaq 6830s HP Compaq 6835s HP 600 HP 610 HP 615 Compaq 6730s Compaq 6735s Compaq 6830s HP 610 HP 615 HP Compaq 550