HP 1420-0353 - 3.0V battery - 1.4Ah lithium cell - Type CR12600SE or equivalent - Not rechargeable - For newer PDH board or processor board (two used) Retail
HP 1420-0321 - 9.6V battery - 4.0Ah nickel cadmium (NiCd) battery pack - For battery backup board (one used) Retail