Battery Testing Procedure - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

Caution
1. The battery plugs should be removed during charging.
2. The battery electrolyte level may rise and overflow from the battery during charging.
3. Explosions may occur if the battery is brought close to naked flames during charging.
4. Be careful to avoid tasks that might produce sparks or other danger while the battery is
charging.
5. After charging is complete, replace the battery plugs, pour water over the battery to rinse
away any sulphuric acid, and let the battery stand to dry.
6. Charge the battery in a well-ventilated location.
7. Do not let the battery electrolyte temperature rise above approximately 45_C
(approximately 55_C during rapid charging).

BATTERY TESTING PROCEDURE

TEST STEP
(1) Turn headlamps on for 15 seconds.
(2) Turn headlamps off for 2 minutes to allow battery voltage to
stabilize.
(3) Disconnect cables.
Read open circuit voltage.
OK: Open circuit voltage is more than 12.4 V
(1) Connect a load tester to the battery.
(2) Load the battery at the recommended discharge rate (see LOAD
TEST RATE CHART) for 15 seconds.
(3) Read voltage after 15 seconds, then remove load.
(4) Compare the measured value with the minimum voltage (see
LOAD TEST CHART).
OK: Higher than minimum voltage
Normal
ROAD TEST RATE CHART
Battery type
Charging time when fully discharged h
[5-amp. rated current charging]
Load test (Amps)
ROAD TEST CHART
Temperature _C 21 and above
Minimum voltage V 9.6
CHASSIS ELECTRICAL -
OK
OK
OK
16 – 20 10 –15
9.5 9.4
Battery
NG
Charge battery at 5 amps. (Refer to LOAD TEST RATE CHART)
Retest
NG
Replace battery
44B20L
6.8
150
4 – 9 - 1 – 3
9.3 9.1
54A-5
- 7 – - 2 - 12 – 8 - 18 – - 13
8.9 8.7 8.5