Operation CHARM: Car repair manuals for everyone.

Component Tests and General Diagnostics

Use Bosch Tester 12 200E.




- Load is established with a high current of approx. 200 A and with electronic evaluation of the voltage curve during and after load.

- This test is currently the most dependable method of evaluating the charged condition and physical battery condition (such as cell earth, sulphatation).




- Connect battery tester and adjust cold testing current/rated capacity according to battery specifications.
- Start test as described in Operating Instructions.




- When inspecting the battery, only use scales B and C. Evaluation of test procedure is performed using the table of threshold values, Threshold Values For Battery Inspection (except phone battery) refer to Threshold Values For Battery Inspection.