MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
462
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Chapter XI Electrical System
Section I Storage Battery
1. Storage Battery Performance Parameters
When the dry charged storage battery is urgently needed, fill the prepared electrolyte into the battery
and rest it for 30 min, and after that the battery can be used. However, generally it can only be used in 3
to 5 h after being charged. The storage battery has been charged for 4 h before delivery.
Table 11-1-1 Storage Battery Performance Parameters
Item
Parameter
Storage battery model
6-QA-80
Number of cells
6
Rated voltage (V)
12
Rated capacity (A.H. 20 discharge rate)
90
Height of the electrolyte level over the polar plate (mm)
10~15
Overall dimension (mm) (length×width×height)
300 x 170 x220
Electrolyte specific gravity
See Table 11-1-2 and Table 11-1-3
Table 11-1-2 Electrolyte specific gravity in different areas and temperature conditions (g/cm
3
)
Climate condition (ambient temperature)
Electrolyte specific gravity of fully charged
storage battery at 15°C
In winter
In Summer
Area where temperature is below -40
℃
in winter
1.31
1.27
Area where temperature is above -40
℃
in winter
1.29
1.25
Area where temperature is above -30
℃
in winter
1.28
1.25
Area where temperature is above -20
℃
in winter
1.27
1.24
Area where temperature is above 0
℃
in winter
1.24
1.24
Table 11-1-3 Correction value of electrolyte specific gravity at different temperatures
Electrolyte temperature
measured (
℃
)
+ 45
+ 30
+ 15
0
-15
-30
-45
Correction value of
specific gravity meter
readings
+ 0.02
+ 0.01
0
-0.01
-0.02
-0.03
-0.04
