Check battery - AR54.10-P-1129-01A

Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries

No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. 

Number	Designation		12 AH	30 AH	35 Ah	46 AH
BE54.10-P-1002-01A	Cold test current as per EN	A	170	540	520	420

Number	Designation		60 Ah VRLA	60 AH	62 AH
BE54.10-P-1002-01A	Cold test current as per EN	A	680	510	480

Number	Designation		70 Ah VRLA	74 AH	80 Ah VRLA	84 AH
BE54.10-P-1002-01A	Cold test current as per EN	A	760	680	800	700

Number	Designation		90 Ah VRLA	95 Ah VRLA	100 Ah
BE54.10-P-1002-01A	Cold test current as per EN	A	950	850	760

On model 414 the battery has to be disconnected for the tests to avoid any damage.

Perform test for remaining vehicles with battery installed and connected where possible. Do not connect tester to jump start or charging terminal point, always connect it directly with the battery.

Battery tester

gotis://E_15/54_02.  0

All test steps and entries must be performed thoroughly, otherwise the test result will be distorted.

Test prerequisites:

• Tester with software release 2.0
• Ignition off
• Rotary light switch in position "0"

If the message "Surface voltage" is displayed during the test, the tester has detected that the battery voltage is apparently too high. This increased voltage can be reduced as follows:

• Battery installed: Decrease increased voltage as per the specifications of the tester (e.g. switch on driving lights).
• Battery removed: reduce increased voltage using a suitable volt/amp(s) tester (load battery for approx. 60 s with 20 A to 30 A amps).

As an example, the test procedure for passenger cars is described below.

• Audio component (e.g. radio) switched off
• Battery voltage higher than 12.4 V
• Good contact of the tester on the battery

1. Clip tester (1) on to battery.

   Once the tester is connected the current measured battery voltage is displayed for approx. 2 s. If a so-called "System noise" is detected by the tester, check whether all consumers are switched off and wait (for approx. 2 min), until the quiescent current is minimized and the bus systems are switched off.

   Fig 1: View Of Battery Tester

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
2. Follow the menu and select according to the situation:
   • In vehicle (battery connected to on-board electrical system)
   • Not in vehicle (battery disconnected from on-board electrical system)

     Confirm selection with "Enter".

     Fig 2: Screen Display - Test Selection

     Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
3. Follow the menu and select according to the situation:
   • 12-114 AH (battery capacity 12-114 Ah)
   • AH > (battery capacity ≥115 Ah)

     Confirm selection with "Enter".

     Fig 3: Screen Display - Battery Capacity

     Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
4. Follow menu and select battery type:
   • Normal
   • VRLA

     Confirm selection with "Enter".

     Fig 4: Screen Display - Battery Type

     Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
5. Follow the menu selection and select the test standard for the cold cranking amps.

   The test standard is printed on behind the specification of the cold cranking amps.

   If the imprint of the test standard is not available, select the cold cranking amps "EN".

   Example: 12 V 46 Ah 420 A  → Select EN.

   Confirm selection with "Enter".

   Fig 5: Screen Display - Battery Status

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
6. Read off cold cranking amps and enter in tester.

   Example: 12 V 46 Ah 420 cold cranking amps  → 420 A.

   Confirm input with "Enter".

   The battery test starts after confirmation of the cold cranking amps entry.

   The test result or one of the following messages appears after approx. 15 s:

   • Test code → Step 7
   • Vehicle model → Step 9
   • Temperature > 0°C/< 0°C → Step 10
   • Before charging/After charging → Step 11
   • Surface voltage DETECTED (see above)
     Fig 6: Screen Display - Cold Cranking Amps Value

     Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
7. Read off test code with "Enter" and continue accordingly:
   • "Battery in good condition":

     No further measures required.

   • "Charge and test":

     Fully charge battery and retest (battery voltage > 12.4 V).

8. Print out test code and file in a tamperproof manner.
   • "Replace battery":

     Replace battery if this message appears.

9. Follow the menu and select test mode:
   • Cars
   • Taxi

     Confirm selection with "Enter".

     Fig 7: Screen Display - Select Vehicle Model

     Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
10. Follow the menu and select test mode:
    • > 0°C
    • < 0°C

      Confirm selection with "Enter".

      If this message appears, the battery condition cannot be evaluated.

      Fig 8: Screen Display - Select Test Mode

      Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
11. Follow the menu and select test mode:
    • BEFORE CHARGE
    • AFTER CHARGE

      Confirm selection with "Enter".

      Fig 9: Screen Display - Select Test Mode (Charge)

      Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
12. Perform additional menu-assisted function (e.g. starting several times and switching on consumers).

    Only in taxi test mode if displayed in menu.