3 General Operation
22 EPOCH 50 GNSS System User Guide
3.1 Batteries and power
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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.
31.1 Receiver power
The rover receiver can be powered by its internal, removable battery or by an external
power source connected to Port 1 or Port 2. Typically, one internal 2.4 Ah battery
provides approximately 4.0 hours of operation during an RTK survey when the internal
radio is used in Rover mode. The basic kit contains three batteries for up to 12 hours of
total operation.
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 receiver configured as a base should be powered by an external 12 V battery, which
lasts 12 hours in continuous use, depending on the output power level on the radio.