Komatsu PC290LC-6K Operation & Maintenance Manual page 132

14. COLD WEATHER OPERATION
14.1.3 BATTERY
• 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 electrolyte 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.
Temp of
fluid
Rate of
o
20 C
charge
100% 1.28
90% 1.26
80% 1.24
75% 1.23
2-88
WARNING
0 o o
0 C -10 C -20
1.29 1.30 1.31
1.27 1.28 1.29
1.25 1.26 1.27
1.24 1.25 1.26
C