What should the battery voltage be on a Honda Accord?
Measure battery voltage with the key off. It should be around 12.6 volts. Then keep measuring voltage as someone starts the car. While the starter is engaged, the voltage should drop to around 9 volts. If it goes lower than this, then either the starter is bad or the battery has a poor connection internally.
What causes a Honda Accord battery to go bad?
If the battery discharges quickly, it is bad, but that would be normal for an old battery. If your battery has a poor connection in it, it won’t discharge quickly, but will put out a steady voltage for the duration of the test. But that voltage will be lower than normal. If the battery does test good, then you may have a bad starter.
When does a Honda Accord have a bad starter?
If the battery does test good, then you may have a bad starter. After the car starts, the voltage across the battery should be between 13.8 and 15 volts. If it is below 13.4, the alternator is bad, above 15.1, the regulator is bad.
Why does my Honda Accord start so slow?
If it goes lower than this, then either the starter is bad or the battery has a poor connection internally. If it is significantly higher and the starter is turning slower, you may simply need to clean your battery terminals. If the voltage is lower, then the battery needs to be hooked up to a load tester.
Measure battery voltage with the key off. It should be around 12.6 volts. Then keep measuring voltage as someone starts the car. While the starter is engaged, the voltage should drop to around 9 volts. If it goes lower than this, then either the starter is bad or the battery has a poor connection internally.
If the battery does test good, then you may have a bad starter. After the car starts, the voltage across the battery should be between 13.8 and 15 volts. If it is below 13.4, the alternator is bad, above 15.1, the regulator is bad.
If the battery discharges quickly, it is bad, but that would be normal for an old battery. If your battery has a poor connection in it, it won’t discharge quickly, but will put out a steady voltage for the duration of the test. But that voltage will be lower than normal. If the battery does test good, then you may have a bad starter.
If it goes lower than this, then either the starter is bad or the battery has a poor connection internally. If it is significantly higher and the starter is turning slower, you may simply need to clean your battery terminals. If the voltage is lower, then the battery needs to be hooked up to a load tester.