GR10/GR25, Operation
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7.2 Batteries
7.2.1 Operating Principles
Charging / first-time
use
• The battery must be charged prior to using it for the first time.
• The permissible temperature range for charging is between 0°C to +40°C/ +32°F to
+104°F. For optimal charging, we recommend charging the batteries at a low
ambient temperature of +10°C to +20°C/+50°F to +68°F if possible.
• It is normal for the battery to become warm during charging. Using the chargers
recommended by Leica Geosystems, it is not possible to charge the battery if the
temperature is too high.
For NiCd and NiMH Batteries
• For new batteries or batteries that have been stored for a long time (> three
months), it is effectual to make 3 – 5 charge/discharge cycles.
For Li-Ion Batteries
• For Li-Ion batteries, a single refreshing cycle is sufficient. We recommend carrying
out a refreshing cycle when the battery capacity indicated on the charger or on a
Leica Geosystems product deviates significantly from the actual battery capacity
available.
Operation /
Discharging
• The batteries can be operated from -20°C to +55°C/-4°F to +131°F.
• Low operating temperatures reduce the capacity that can be drawn; high operating
temperatures reduce the service life of the battery.
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