HP 481089-001 - Real-time clock (RTC) battery - CR2032 button style, 3VDC, 220mAh, lithium, 20mm diameter, 3.2mm height Retail
HP 348329-001 - 3.0V nickel metal-hydride coin/tablet battery - 35mm diameter, 3.2mm thick, 160mAh (Sony type CR2025) Retail