Checking Acid Density

→ The accident prevention regulations must be strictly observed when handling battery acids.

→ Wear suitable protective clothing and protective glasses.

→ Only use a torch to illuminate the inside of the battery. Never illuminate the inside of the battery with a naked flame.

→ Do not handle a naked flame or lighted cigarettes near batteries.

→ Observe the disposal regulations for batteries and sulphuric acid when disposing of batteries.

Information 

• Only for low-maintenance batteries. 

Information 

• Use commercially available battery acid tester. 
• The acid density test provides information about the state of the battery in conjunction with the battery load test. 
• The temperature of the battery acid must be at least 10°C. 

The density of the acid must be checked as follows in all battery cells (low-maintenance battery):

1. Switch off ignition and remove ignition key.
2. Unscrew all battery plugs (plugs of the battery cells).
3. Dip the acid siphon or the pipette into the battery cell and take up the battery acid.
4. Read off the density of the acid in kg/dm³ on the scale of the battery acid tester and compare with the following table.

   Battery charge state in normal climatic zones	Density in kg/dm3
   discharged	1.12
   half charged	1.20
   well charged	1.28

   Battery charge state in tropical climatic zones (hot countries)	Density in kg/dm3
   discharged	1.08
   half charged	1.16
   well charged	1.23

   The acid density must be at least 1.24 kg/dm³ in normal climatic zones.

   • If the acid density is too low, charge battery.
   • After charging the battery, repeat the acid density test.

   The measured values for the acid density of the individual battery cells must not differ by more than 0.03 kg/dm³ from each other.

   Examples of non-permissible acid density deviations:
   Battery cell:	1	2	3	4	5	6
   	Acid density per cell in kg/dm3
   Example 1:	1.24	1.25	1.25	1.10	1.24	1.25
   Example 2:	1.26	1.26	1.25	1.14	1.18	1.24
   Example 1: The acid density in cell 4 is too low. Example 2: The acid density in cells 4 and 5 is too low. The acid density deviations between the battery cells is greater than 0.03 kg/dm3 . If the nominal values are not achieved, replace battery. If the nominal values are achieved, screw in the original plugs again.

   WARNING: Incorrect handling of safety bolts

   • Danger of injury
   • Loss of torque

   → Always use new fastening screws and nuts following removal.

   → Observe specified tightening torques.

   → Carry out a visual inspection of all re-used parts.

5. Replace the battery box cover carefully. The cover must be mounted properly.
   Fig 1: Fitting Battery Box Cover Using Tool

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Attach the four tension hooks on the battery box cover and close using the screwdriver.
7. Clip in wire harness for seat at the battery box.
   WARNING: Incorrect handling of safety bolts

   • Danger of injury
   • Loss of torque

   → Always use new fastening screws and nuts following removal.

   → Observe specified tightening torques.

   → Carry out a visual inspection of all re-used parts.

8. Move the folded seat towards the rear -Arrow A-  and then fold it forward -Arrow B-  .
   Fig 2: Moving Folded Seat Towards Rear

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
9. Tighten fastening screws -1-. → Tightening torque: 45 Nm (33 ftlb.) 
10. Clip in the right and left carpet trim -Arrows-  until they engage securely.
    Fig 3: Clipping Right And Left Carpet Trim

    Courtesy of PORSCHE CARS NORTH AMERICA, INC.
11. Clip in the front seat trim at the front seat frame and at the side trim panel -Arrow A-  .
    Fig 4: Clipping Trim Panel For Front Seat Frame

    Courtesy of PORSCHE CARS NORTH AMERICA, INC.
12. Press the front seat trim down -Arrow B-  until the locking lugs engage securely on the seat frame.