User's Manual

Power Management
Power Management
The Duo-Touch uses dynamic power management ( DPM ) so you can
reduce the amount of energy used, especially during periods of inactivity.
Effective use of power management options can greatly conserve and
extend your battery life.
Your Duo-Touch includes a smart Li-ION battery pack and a Real Time
Clock coin battery. There is also an optional second external battery pack
that effectively doubles your battery powered runtime.