User's Manual

4 General Operation
46 Trimble R7/R8 GPS Receiver User Guide
Trimble R7 GPS Receiver Operation
Figure 4.2 Charging the batteries
The two internal batteries take approximately eight hours to charge.
They are charged individually, so each battery takes approximately four
hours to charge. The internal batteries start charging whenever an
external power supply of greater than 15 V is detected.
C
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.
– If battery fluid gets into your eyes, immediately rinse your eyes with
clean water and seek medical attention. Do not rub your eyes!
– If battery fluid gets onto your skin or clothing, immediately use clean
water to wash off the battery fluid.
2
3
Power/serial data cable
To AC
power supply