3 General Operation
20 Epoch 25 L1/L2 GPS System User Guide
3.1 Batteries and power
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WARNING – Do not damage the rechargeable Lithium Polymer 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.
31.1 Rover receiver
Note – Only the rover has an internal battery.
The rover receiver can be powered by its internal, non-removable battery or by an
external power source connected to Port 1 or Port 2. Typically, one internal 3.6 Ah
battery provides approximately 8 hours of operation during an RTK survey when the
internal radio is used in Rover mode.
If an external power source is connected to Port 1 or Port 2, 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.
The battery takes 4 hours to charge.
31.2 Base receiver
The base receiver is powered by an external 12 V battery, which lasts 8 hours in
continuous use.
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