User's Manual

4 General Operation
48 Trimble R7/R8 GPS Receiver User Guide
Trimble R7 GPS Receiver Operation
A battery that has reached the deep discharge level cannot be
recharged and must be replaced. The following recommendations
provide optimal performance and extend the life of your batteries:
• Fully charge all new batteries before use.
• Do not allow the batteries to discharge below 5 volts.
• Keep all batteries on continuous charge when not in use.
Batteries may be kept on charge indefinitely without damage to
the receiver or batteries.
• Do not store batteries in the receiver or external charger unless
power is applied.
• If you must store the batteries, fully charge them before storing
and then recharge them at least every three months.
Disposing of the rechargeable Lithium-ion battery
Discharge the Lithium-ion battery before disposing of it. When
disposing of the battery, be sure to do so in an environmentally
sensitive manner. Adhere to any local and national regulations
concerning battery disposal or recycling.
47.2 Operating with the TSCe controller
If the receiver is being powered by its internal batteries, it does not
supply power to the TSCe controller when they are connected.
However, the TSCe controller batteries and the Trimble R7 receiver
batteries can be charged at the same time from the same power supply.
To charge both sets of batteries, use two standard power/serial data
cables to connect the TSCe controller and the receiver to a power
supply, as shown in Figure 4.3.