Mitsubishi MOTORS Laser 1991, Service Manual, Page: 189 / 320

BATTERY
8489
LOAD TEST RATE CHART
Load
Test
Cranking
Rating
Reserve
Capacity
Application
206 amps amps minutes
252 amps 525 amps
90 minutes
LOAD TEST CHART
Minimum
Voltage
Temperature
9.6 70 and above 21 and above
9.5 60
9.4
I
50
I
10
9.3
40 4
9.1 30 - 1
8.9 20 - 7
8.7
10 - 1 2
8.5 0 - 1 8
.
Note
The temperature is an ambient temperature of the battery
that has been exposed to for the preceding few hours.
Battery electrolyte temperature may temporarily be
allowed to rise to Increase of
electrolyte temperature above (131 is
harmful to the battery, causing deformation of battery
cell, decrease in life of battery, etc.
If the test indicator is white, the battery should be
charged as outlined below.
1. Turn headlights on for 15 seconds,
2. Turn headlights off for 2 minutes to allow battery
voltage to stabilize.
3. Disconnect cables.
4. Read open circuit voltage.
5. If the open circuit voltage is under 12.4 volts,
charge the battery. (See BATTERY CHARGING)
1. Connect a load tester to the battery.
2. Load the battery at 15 amps for 15 seconds to
remove surface charge.
3. Load the battery at the recommended
rate. (See LOAD TEST RATE CHART)
4. Read voltage after 15 seconds and then remove
the load.
5. If the voltage is not maintained at the minimum
voltage in the LOAD TEST CHART throughout the
test, the battery should be replaced.
When the dot appears or when maximum charge
shown below is reached, charging should be
stopped.
NOTE
When the charging is performed at 5 amps,
charging
is virtually 100% three hours after the indicator’s
indication changes from white to green.
Use fast charging only in an emergency.
If the indicator does not turn to green even after the
battery is charged, the battery should be replaced; do
not overcharge.
Battery Slow Charging Fast Charging
Group
size 86 5 amps amps 20 amps 30 amps
amps or 525 15 hrs. 7.5 hrs.
3.75 hrs. 2.5 hrs.
amps)