Topcon GR-5 - Using the Detachable Batteries

Powering the Receiver
P/N 7010-1004
2-15
Using the Detachable Batteries
The GR-5 receiver comes with two detachable, rechargeable batteries
and an AA battery shell. Each battery can provide between 5 and 10
(approximate) hours of operation at room temperature, depending on
the mode of the receiver and the capacity of the battery.
Table 2-1. Estimated Operating Times Using Two Fully-charged Batteries
Common Conditions: Bluetooth = on; 10-12 SV tracked; using the detachable
batteries; room temperature
For the GR-5 with FH915+ Modem
Receive only mode 14 hours
250mW transmission mode
12 hours
a
1W transmission mode
10 hours
a
GSM/GPRS in urban areas 13 hours
For the GR-5 with Digital Modem
Receive only mode 14 hours
0.5W transmission mode
12 hours
a
1W transmission mode
9 hours
a
GSM/GPRS in urban areas 12 hours
For the GR-5 with Satel Modem
Receive only mode 14 hours
0.5W transmission mode
12 hours
a
a. At 1 Hz correction rate, charger off.
1W transmission mode
11 hours
a
GSM/GPRS in urban areas 12 hours
Common Conditions: 10–12 SV tracked; using the detachable batteries; room
temperature
For the GR-5 with Any Modem
Modem off 20 hours
Common Conditions: 10–12 SV tracked; using the battery shells and AA
batteries; room temperature
For the GR-5 with Any Modem
Modem off 2.5 hours