use the unit is simple to use and works very well. When allowing
the iPAQ to discharge down to 10% the extender recharged the battery
(iPAQ powered off) in just over an hour and a half with both 1500
and 1700 batteries. Allowing the iPAQ to discharge down to 10% again
the charge took a bit longer coming in at about 1 hour 45 minutes.
Whilst testing the only
downside that I noticed was that if you left the extender connected
to the iPAQ when the extender's power was exhausted it drained the
power from the iPAQ batteries, even worse whist it was draining
the batteries the charging light was flashing on the iPAQ. This
occurred when I tried to charge the unit for a third time on one
set of batteries.
Armed with a fully charged
iPAQ and Navman sleeve, the battery extender and two sets of batteries
you should expect to be able to run your GPS system constantly for
at least 10 hours, maybe more with careful use of power facilities,
especially turning off the screen backlight.