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 

Reduce increased voltage after charging process 

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 VRLA	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

Always perform test with battery installed and connected. Do not clip on tester at the jump start or charging support point but always directly at the battery.

Battery tester/test equipment, as well as test terminals

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

Test requirements:

• Tester with software release 2.0
• Ignition off
• Rotary light switch in position "0"
• Radio Off or Command APS Off
• Battery voltage higher than 12.4 V
• Good contact of the tester on the battery

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: Decrease increased voltage as described in the document "Decrease increased voltage as per charging process".

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

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: Identifying Clip 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 - In Vehicle And Not In Vehicle

     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)
   • 115 AH > (capacity of battery ≤ 115 Ah)

     Confirm selection with "Enter".

     Fig 3: Screen Display - 12 - 114 AH And 115 AH

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

     Confirm selection with "Enter".

     Fig 4: Screen Display - Normal And VRLA

     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 (e.g. EN, DIN, SAE, IEC, JIS) is printed behind the cold cranking amps specification.

   If the test standard imprint is not present, select cold cranking amps EN (European standard).

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

   Confirm selection with "Enter".

   Fig 5: Screen Display - Test Standard (e.g. EN, DIN, SAE, IEC, JIS)

   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  → Confirm input with "Enter".

   Fig 6: Screen Display - Cold Cranking AMPS

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   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)
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).

   • "Replace battery":

     Replace battery if this message appears.

8. Print out test code and file in a tamperproof manner.
9. Follow the menu and select test mode:
   • Cars
   • Taxi

     Confirm selection with "Enter".

     Fig 7: Screen Display - Cars And Taxi

     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 - Above 0 Degrees C And Below 0 Degrees C

      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 - Before Charge And After Charge

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

    Only in taxi test mode if displayed in menu.