This battery is compatible with following part numbers:
FOR HP
  • 587706-751
  • 587706-761
  • 593572-001
  • 593573-001
  • BQ350AA
  • HSTNN-CB1A
  • HSTNN-CBOX
  • HSTNN-DB1A
  • HSTNN-Q78C
  • HSTNN-Q78C-3
  • HSTNN-Q78C-4
  • HSTNN-Q81C
  • HSTNN-UB1A
  • HSTNN-W79C-5
  • PH06
FOR HP COMPAQ
  • 587706-761
  • HSTNN-CB1A
  • HSTNN-CBOX
  • HSTNN-DB1A
  • HSTNN-I85C-3
  • HSTNN-I85C-4
  • HSTNN-I85C-5
  • HSTNN-I86C-3
  • HSTNN-I86C-4
  • HSTNN-I86C-5
  • HSTNN-IB1A
  • HSTNN-LB1A
  • HSTNN-Q78C
  • HSTNN-Q78C-4
  • HSTNN-Q81C
  • HSTNN-Q81C-3
  • HSTNN-Q81C-4
  • HSTNN-UB1A
  • HSTNN-W79C-5
  • HSTNN-W79C-7
  • HSTNN-W80C
This  battery is compatible with following models:
FOR COMPAQ
  • 320
  • 321
  • 325
  • 326
  • 420
  • 421
  • 620
  • 621
FOR HP
  • 420
  • 425
  • 4320t
  • 620
  • 625
  • for ProBook 4320s
  • for ProBook 4321S
  • for ProBook 4325s
  • for ProBook 4326s
  • for ProBook 4420s
  • for ProBook 4421s
  • for ProBook 4425s
  • for ProBook 4520s
  • for ProBook 4525s
This replacement laptop battery does Not apply ProBook 4720s