Komatsu WA20-2, Operation & Maintenance Manual

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14.1.3 BATTERY

WARNING
‡ To avoid gas explosions, do not bring fire or sparks near the
battery.
‡ Battery electrolyte is dangerous. If it gets in your eyes or on
your skin, wash it off with large amounts of water, and
consult a doctor.
When the ambient temperature drops, the capacity of the battery
will also drop. If the battery charge ratio is low, the battery electro-
lyte may freeze. Maintain the battery charge as close as possible to
100%, and insulate it against cold temperature so that the machine
can be started easily the next morning.
REMARK
Measure the specific gravity and calculate the rate of charge
from the following conversion table.
14. COLD WEATHER OPERATION 14. COLD WEATHER OPERATION
Temp.
of fluid
20°C 0°C –10°C –20°C –30°C
Rate of
charge
100% 1.28 1.29 1.30 1.31 1.32
90% 1.26 1.27 1.28 1.29 1.30
80% 1.24 1.25 1.26 1.27 1.28
75% 1.23 1.24 1.25 1.26 1.27