Keeping an extra source of power nearby means your iPAQ can run for longer periods away from your home or office.
HP FA827AA, Battery, iPAQ rx5000, Lithium-Ion (Li-Ion), 1700 mAh, 3.7 V, 64 mm
HP FA827AA. Product type: Battery, Compatible products: iPAQ rx5000, Battery technology: Lithium-Ion (Li-Ion). Width: 64 mm, Depth: 56 mm, Height: 6 mm