Question : IN 33 months, I changed two batteries for my Myvi.
The first unit was supposed to be a
cheap brand. I replaced it with a more
expensive maintenance free battery
which also did not last.
Is there a test method to make sure
it is not the car's alternator or other
wiring problem, as I will be on the losing end to replace the battery?
Answer : Let us get some facts straightened out first. The purpose of
the battery in the car is to start the engine and to run accessories and some lights when the car
The main source of electrical power in
the car is the alternator and if that is not
providing sufficient current to run all the
equipment, then the shortfall will have
to be made up by the battery and when
the load gets less, the battery is fully
charged up again.
So you can see that the more the battery is discharged and charged up again,
the faster it will wear out.
If you have not added a lot of accessories that pull a lot of current, then the
best thing to do is get your alternator
checked to see if it is giving sufficient