Uniden Data 2000 Wireless CDPD PC Card - Manual (Page 7)

1.7 Battery Life Expectations
The Uniden Data 2000 is powered by 4 AAA size alkaline batteries that,
depending upon your application, should provide you with several
days of use. Here is a matrix below that will give you an idea of the
expected battery life in relation to the modem’s anticipated use:
Data Usage: High Medium Light
User: Information Business User Casual User
Technology
User
Application: File Transfer Web Browsing Occasional
e-mail
Battery Life: 4-5 hours 16-20 hours 60-80 hours
The above matrix is only an estimate. Your actual battery life will vary
based on your use of the modem and other parameters. Whenever
you are in a more stationary situation, Uniden recommends that you
use the AC power adapter (wall unit) that comes with your Uniden
Data 2000.
To ensure maximum battery life, Uniden recommends that you turn
the modem power switch off when not in use.
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Uniden Data 2000 Installation and Operation Manual 1-5