Multitech GFU19 User Manual download pdf (Page 39)

GS10/GS15, Operation 39

3.2 Batteries

3.2.1 Operating Principles

Charging / first-

time use

• The battery must be charged prior to using it for the first time because it is deliv-

ered with an energy content as low as possible.

• 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 new batteries or batteries that have been stored for a long time (> three

months), it is effectual to make only one charge/discharge cycle.

• For Li-Ion batteries, a single discharging and charging cycle is sufficient. We

recommend carrying out the process 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 oper-

ating temperatures reduce the service life of the battery.

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Multitech GFU19 User Manual Page 39