Very
Let me be clear at the start I don’t have an answer or reliable way to test a battery with a tester. The only 100% reliable test I have used so far is through substitution of a working battery
A couple of times people have taken a car to a garage and had the battery tested fine.
What we don’t know here is what was used or if the operator knew how to interpret the results
I know of one case where this has lead to an unnecessary steering column change, twice
The problem is now made worse with start stop technology and there batteries being twice as expensive. Nobody likes wasting money replacing parts unnecessary.
Let me be clear at the start I don’t have an answer or reliable way to test a battery with a tester. The only 100% reliable test I have used so far is through substitution of a working battery
A couple of times people have taken a car to a garage and had the battery tested fine.
What we don’t know here is what was used or if the operator knew how to interpret the results
I know of one case where this has lead to an unnecessary steering column change, twice
The problem is now made worse with start stop technology and there batteries being twice as expensive. Nobody likes wasting money replacing parts unnecessary.