HP 1420-0532 - 2.4V battery pack - 2.8Ah, nickel cadmium (NiCd) battery pack with cable - Rechargeable Retail
HP 1420-0507 - 6V battery pack - 3.7Ah, lead acid battery pack with cable - Mounts in front part of power supply Retail
HP 1420-0321 - 9.6V battery - 4.0Ah nickel cadmium (NiCd) battery pack - For battery backup board (one used) Retail