User's Manual

14 General Operation
122 Trimble R7/R8 GPS Receiver User Guide
Trimble R8 GPS Receiver Operation
14.5Resetting to Defaults
To reset the receiver to its factory default settings, hold down [P] for at
least 15 seconds.
For more information, see Default Settings, page 152.
14.6Batteries and Power
C
WARNING – Do not damage the rechargeable Lithium-ion battery. A
damaged battery can cause an explosion or fire, and can result in personal
injury and/or property damage.
To prevent injury or damage:
– Do not use or charge the battery if it appears to be damaged. Signs of
damage include, but are not limited to, discoloration, warping, and
leaking battery fluid.
– Do not expose the battery to fire, high temperature, or direct sunlight.
– Do not immerse the battery in water.
– Do not use or store the battery inside a vehicle during hot weather.
– Do not drop or puncture the battery.
– Do not open the battery or short-circuit its contacts.
The Trimble R8 receiver can be powered by its internal battery or by an
external power source connected to Port 1. Typically, one internal 2.0
ampere-hour battery provides approximately 5.5 hours of operation
during an RTK survey using the internal radio in rover mode and
approximately 3.5 hours of operation as an RTK base (this varies
according to temperature and wireless data rate).
If an external power source is connected to Port 1 it is used in
preference to the internal battery. When there is no external power
source connected, or if the external power supply fails, the internal
battery is used.
WARNING – Avoid contact with the rechargeable Lithium-ion battery if it
appears to be leaking. Battery fluid is corrosive, and contact with it can
result in personal injury and/or property damage.
To prevent injury or damage:
– If the battery leaks, avoid contact with the battery fluid.