Battery, Testing with Midtronics Battery/Starting/Charging System Analyzer MCR340A

CAUTION: Risk of injury from battery acid.

Prior to handling or servicing batteries, read, understand and observe the Warnings and Safety Measures for lead-acid batteries for lead-acid batteries → Safety Precautions !
Wear protective eyewear and clothing → 27 - Battery, Starter, Generator, Cruise control .
If the magic eye has no color or is light yellow, the battery may not be tested or charged. Jump starting must not be used! There is a risk of explosion during testing, charging or jump starting. The battery must be replaced.
DO NOT battery test batteries which are gassing. Otherwise there is a risk of explosion.

Dispose of electrolyte (sulfuric acid/water mixture) properly! Waste electrolyte must only be disposed of in appropriate waste disposal sites. Refer to local regulations pertaining to electrolyte disposal.
The following notes and procedures must be followed to ensure correct measurements.

Special tools, testers and auxiliary items required

Fig 1: Battery VAS Tester

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Midtronics Battery/Starting/Charging System Analyzer MCR340A (VAS tester illustrated here for reference only)

Procedure

CAUTION:

Switch off all electrical consumers.
Switch ignition off and remove ignition key.
Refer to Midtronics Battery/Starting/Charging System Analyzer MCR340A Instruction Manual.

On battery with charge indicator "Magic Eye" , check color display → Maintenance-Free Battery with Visual Indicator, Checking Color Display .

Check no-load voltage → Battery No-Load Voltage - Vehicles without Energy Management Control Module, Checking .

Connect tester cable clamps to battery terminal → MCR340A Instruction Manual. Tester leads must be securely fastened and make proper contact with battery posts.

Select test mode "IN-VEHICLE" or "OUT-OF-VEHICLE" as appropriate → MCR340A Instruction Manual.

Perform battery test by setting load current on tester according to battery (DIN) capacity → MCR340A Instruction Manual.

NOTE:

Use print function of MCR340A in event test results are required for warranty claims.

Battery test results:

Battery Tester Display / Printout	Required action
Good Battery	None
Good - Recharge	Charge battery where necessary
Use inCHARGE	Charge battery
Replace Battery	Replace battery. Electrical Equipment 27 Battery.
Bad Cell - Replace	Replace battery. Electrical Equipment 27 Battery.

NOTE:

If battery is replaced, follow disposal regulations → 27 - Battery, Starter, Generator, Cruise control .