Audi Workshop Service and Repair Manuals

Checking battery using battery tester with printer -VAS 5097A- t  Measuring voltage under load simulates starting engine at low temperatures. During the test, a high current flows through the battery, causing the voltage to drop. The amount of the voltage drop will depend on the state of charge of the battery. The voltage must not fall below the minimum value specified by the battery tester. t  After the test, the voltage will remain at a low level for a long time, rising only slowly. t  If the battery is defective or only weakly charged, the battery voltage will drop very rapidly below the specified minimum voltage level. t  The battery must be renewed if the voltage drops below the specified minimum level. t  Only perform the test once. Repeating the test would falsify the result. t  The battery tester must be allowed to cool down for approximately 30 minutes before checking another battery. The battery tester with printer -VAS 5097 A- can be used to check 12 V batteries with the following low temperature test currents:

Low temperature test current in A (Ampere)
According to DIN 1)2)	According to EN / SAE 3)	According to IEC 4)
80 – 104	136 – 177	95 – 124
105 – 129	178 – 219	125 – 154
130 – 154	220 – 261	155 – 184
155 – 179	262 – 303	185 – 214
180 – 204	304 – 345	215 – 244
204 – 229	346 – 387	245 – 274
230 – 254	388 – 429	275 – 304
255 – 279	430 – 471	305 – 334
280 – 304	472 – 513	335 – 364
305 –329	514 – 555	365 – 394
330 – 354	556 – 597	395 – 424
355 – 379	598 – 639	425 – 454
380 – 389	640 – 657	455 – 464
390 – 399	658 – 675	465 – 474
400 – 409	676 – 693	475 – 484
410 – 419	694 – 711	485 – 494
420 – 429	712 – 729	495 – 504
430 – 439	730 – 747	505 – 514
440 – 449	748 – 765	515 – 524
450 – 459	766 – 783	525 – 534
460 – 469	784 – 801	535 – 544
470 – 479	802 – 819	545 – 554
480 – 489	820 – 837	555 – 564
490 – 499 4)	838 – 855	565 – 574
l  1) DIN = Deutsche Industrie Norm (German industrial standard). l  2) Batteries with a low temperature test current of 520 A according to DIN can be checked with the setting for 499 A according to DIN. l  3) EN / SAE = European standard / Society of Automotive Engineers. l  4) IEC = International Engineering Consortium.

Note For information on battery tester with printer, refer to → Operating instructions for the VAS 5097A or sticker → Brief operating instructions for battery tester with printer VAS 5097 A on unit. Special tools and workshop equipment required

t  Battery tester with printer -VAS 5097A-   Note For information on how to use the battery tester, refer to → Operating instructions for VAS 5097A. Procedure l  Battery temperature must be at least +10 °C.   WARNING Risk of injury due to electrolyte. t  Observe safety instructions when handling battery electrolyte → Anchor. t  Wear eye protection and protective clothing → Anchor. t  Sealing plugs of batteries which are not maintenance-free must be firmly screwed in when measuring voltage under load. Risk of explosion due to a discharged battery with „magic eye“. The battery must NOT be checked or charged if the indicator of the „magic eye“ is colourless or yellow. Do NOT boost start the vehicle. There is a risk of explosion when checking or charging the battery or boost starting the vehicle. The battery must be renewed. –  Switch off ignition before disconnecting earth wire at battery → Electrical system; Rep. gr.27. –  Check colour indicator of batteries with „magic eye“ → Chapter. –  Determine the low temperature test current in amps (A) according to DIN from the data on the battery and use the table → Chapter to read off the setting range for the battery tester with printer -VAS 5097 A-.

–  Set the low temperature test current with the selector switch -5-. –  Set the measuring range, 80 - 379 A or 380 - 499 A, with the ON/OFF switch -6-.   Note Batteries with a low temperature test current of 520 A according to DIN can be checked with the setting for 499 A according to DIN. –  Connect red test clamp „+“ of battery tester to positive battery terminal. –  Connect black test clamp „–“ of battery tester to negative battery terminal.   Note t  Make sure the test clamps make proper contact. t  Please note the TPI 2012182 on the battery tester with printer -VAS 5097 A-.

–  Use the sliding switch -7- to select the connection point for the test clamps. 1 -  Direct connection to battery 2 -  Connection to external test points in engine compartment –  Check whether the low temperature test current indicated on the battery matches the value set on the battery tester.

–  Press start button -4-. l  Green LED -1- lights up. l  The test program runs through automatically. l  The printer -9- will print out the test result after 20 seconds.   Note t  If battery tester does not start up (no LED lights, no printout), battery must be charged → Chapter. t  If red LED -2- lights up, battery tester has been connected with reverse polarity. t  If red LED -3- lights up, battery is not suitable for testing. Renew battery. –  Switch off battery tester with ON/OFF switch -6-. –  Detach test clamps.

Test result on printout: 1 -  Measuring range set on battery tester 2 -  Diagram (-arrow- indicates battery status) 3 -  Test result 4 -  Battery voltage during load test 5 -  Vehicle data and date must be entered by mechanic

Battery tester printout	Measures
Battery Very Good	Battery OK
Battery Good	Battery OK
Battery Sufficient	Measure current draw → Chapter
Battery Not Good	Measure current draw → Chapter
Battery Faulty	Measure current draw → Chapter
Cannot be tested	Charge battery → Chapter and test again

Note Observe disposal regulations if battery has to be renewed → Anchor.