HP ProBook 4320s / 4321s / 4325s / 4326s / 4420s / 4421s / 4425s /4525s. HP 420 / 425 / 4320t / 620 / 625. HP Compaq 320 / 321 / 325 / 326 / 420 / 421 / 620 / 621. Battery type: Li-ion. Cell: 6 Cells.
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