Leica Builder M power, User Manual

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Operation Builder 49
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For NiMH batteries:
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.
• 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.
• The permissible temperature range for charging is between 0°C to +35°C/+32°F
to +95°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.
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; very high
operating temperatures reduce the service life of the battery.