Komatsu ecot3 Operation And Maintenance Manual page 247

COLD WEATHER OPERATION
Battery
The battery generates flammable gas. 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 a large amount of water and consult a
doctor.
Battery electrolyte dissolves paint. If it gets on the bodywork, wash it off immediately with water.
If the battery electrolyte is frozen, do not charge the battery or start the engine with a different power source. There is danger
that the battery may explode.
Battery electrolyte is toxic. Do not let it flow into drainage ditches or spray it on to the ground surface.
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%. Insulate it against cold
temperature to ensure the machine can be started easily the next morning.
REMARK
Measure the specific gravity and calculate the charging rate from the following conversion table.
Electrolyte
Temperature
Charging
Rate (%)
100
90
80
75
As the battery capacity drastically drops in low temperatures, cover or remove the battery from the machine, store
the battery in a warm place, and install it again the next morning.
If the electrolyte level is low, add distilled water in the morning before beginning work. Do not add water after the
day's work to prevent diluted electrolyte in the battery from freezing during the night.
3 - 190
WARNING
20 ° C 0 ° C -10 ° C
(68 ° F) (32 ° F) (14 ° F)
1.28 1.29
1.26 1.27
1.24 1.25
1.23 1.24
-20 ° C
(-4 ° F)
1.30 1.31
1.28 1.29
1.26 1.27
1.25 1.26
OPERATION