Nissan X-Trail 32. Manual - part 1716

PG-118

< BASIC INSPECTION >

BATTERY INSPECTION

BASIC INSPECTION

BATTERY INSPECTION

R9M

R9M : How to Handle Battery

INFOID:0000000010713253

CAUTION:

• If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt

booster battery.

• After connecting battery cables, ensure that they are tightly clamped to battery terminals for good

contact.

• Never add distilled water through the hole used to check specific gravity.

Methods of Preventing Over-discharge

The following precautions must be taken to prevent over-discharging a battery.

• The battery surface (particularly its top) should always be kept

clean and dry.

• The terminal connections should be clean and tight.
• At every routine maintenance, check the electrolyte level.

This also applies to batteries designated as “low maintenance” and
“maintenance-free”.

• When the vehicle is not going to be used over a long period of

time, disconnect the battery cable from the negative terminal. (If
the vehicle has an extended storage fuse switch, turn it off.)

• Check the charge condition of the battery.

Periodically check the specific gravity of the electrolyte. Keep a
close check on charge condition to prevent over-discharge.

Checking Electrolyte Level

WARNING:

Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid con-
tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.

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BATTERY INSPECTION

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• Remove the cell plug using a suitable tool.
• Add distilled water up to the MAX level.

Sulphation

• A battery will be completely discharged if it is left unattended

for a long time and the specific gravity will become less than
1.100. This may result in sulphation on the cell plates.

• To determine if a battery has been “sulphated”, note its volt-

age and current when charging it. As shown in the figure, less
current and higher voltage are observed in the initial stage of
charging sulphated batteries.

• A sulphated battery may sometimes be brought back into ser-

vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.

Specific Gravity Check

1.

Read hydrometer and thermometer indications at eye level.

2.

Convert into specific gravity at 20

°

C (68

°

F).

Example:

• When electrolyte temperature is 35

°

C (95

°

F) and specific gravity of

electrolyte is 1.230, converted specific gravity at 20

°

C (68

°

F) is

1.240.

• When electrolyte temperature is 0

°

C (32

°

F) and specific gravity of

electrolyte is 1.210, converted specific gravity at 20

°

C (68

°

F) is

1.196.

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PG-120

< BASIC INSPECTION >

BATTERY INSPECTION

R9M : Work Flow

INFOID:0000000010713254

1.

CHECK BATTERY (USE CONSULT)

Check the battery, using CONSULT. Refer to 

EC-1222, "Diagnosis Procedure"

.

Is the check result normal?

YES

>> GO TO 2.

NO

>> Replace battery. Refer to 

PG-139, "R9M : Removal and Installation"

.

2.

 CHECK FLUID LEVEL

Visually check that the fluid level of each battery cell is within specifications.
Is the fluid level of each battery cell within specifications (between MAX. and MIN. limits)?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

FILL WITH BATTERY FLUID

Remove cell plug to add distilled water to the MAX. level.

CAUTION:

• Since battery fluid is highly corrosive, never allow physical contact and a splash on clothing and the

vehicle. After touching the battery, never touch eyes until after hand-washing. In case of skin (or
clothing) contact, immediately wash the contacted area with water for 15 minutes. If the battery fluid
gets in eyes, wash them with clean water and consult with the doctor.

• If the battery surface gets dirty, remove the battery and wash it with water or warm water. After wash-

ing the battery, wipe it dry with a dry cloth. 

• Use battery fluid or distilled water. Never add tap water. Failure to do this will cause low fluid level

and battery discharge. 

• Never allow battery fluid to spill over.

>> GO TO 4.

4.

CHECK BATTERY VOLTAGE

1.

Turn the ignition switch OFF. Turn ON the headlamps and let them stay ON for 30 seconds.

2.

Turn OFF the headlamps and let it stand for one minute.

3.

Check battery voltage.

Is battery voltage 12.4 V or more?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

RECHARGE BATTERY

Recharge the battery according to the battery charger instructions.

CAUTION:

• There are two charging methods: Quick charging and standard charging.

“Standard charging” is used for recovering the state of charge. 
“Quick charging” is used for the emergency recovery of the battery to the state that the engine can
be started.

• Never perform the “Quick charging” for an uncharged battery.

Perform “Standard charging” under normal conditions.

• Comply with the following charging current. 

For “Standard charging”, use approximately 1/10 of the current in 20-hour-rate capacity.
For “Quick charging”, use approximately 1/2 of the current in 20-hour-rate capacity.

• Leave all the cell plugs open during charging.
• Never put the battery close to fire while charging.
• When connecting to the battery charger, connect lead wire before turning ON the battery charger. If

the battery charger is turned ON before connecting the lead wire, sparks are emitted.

• While charging the battery, maintain battery fluid temperature as follows:

 Standard charging: 45 

°

C (113 

°

F) or less

 Quick charging: 55 

°

C (131 

°

F) or less

• Battery charging completes when the specific gravity reaches 1.25 - 1.29 and a steady value is main-

tained for more than 1 hour.

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BATTERY INSPECTION

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• Since quick charging requires a large current and has a high heating value, never perform this con-

tinuously for 30 minutes or more.

NOTE:
During a battery charge, the charger current value decreases naturally with time. This means a battery voltage
value is normally increasing by charging.

>> GO TO 6.

6.

CHECK SPECIFIC GRAVITY

Check that the specific gravity among the battery cells is within specifications, using a hydrometer or battery
coolant tester. Refer to 

PG-118, "R9M : How to Handle Battery"

.

CAUTION:

• Check all the cells for variation.
• After the battery charge, if the variation in specific gravity among the cells is 0.05 or more, replace

the battery. 

Is the specific gravity among the battery cells within specifications?

YES

>> INSPECTION END (The battery is normal.)

NO

>> Replace battery. Refer to 

PG-139, "R9M : Removal and Installation"

.

EXCEPT FOR R9M

EXCEPT FOR R9M : How to Handle Battery

INFOID:0000000010709227

CAUTION:

• If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt

booster battery.

• After connecting battery cables, ensure that they are tightly clamped to battery terminals for good

contact.

• Never add distilled water through the hole used to check specific gravity.

METHODS OF PREVENTING OVER-DISCHARGE

The following precautions must be taken to prevent over-discharging a battery.

• The battery surface (particularly its top) should always be kept

clean and dry.

• The terminal connections should be clean and tight.
• At every routine maintenance, check the electrolyte level.

This also applies to batteries designated as “low maintenance” and
“maintenance-free”.

• When the vehicle is not going to be used over a long period of

time, disconnect the battery cable from the negative terminal. (If
the vehicle has an extended storage fuse switch, turn it off.)

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