Battery Issue/Question - High Output Alternator Installed

[LordX 10+ year member]

I have a 200AMP High Output Alternator in my 2004 Impala 3.4L.

As with many of these units, when the car is at idle (stoplights etc) the output drops.

I have had a regular battery in the car for 2+ years, and I believe it is close to the end of its life.

When I replace this battery - I want to put a battery in that is designed for this type of situation.

One that is designed for charge/discharge many times, and perhaps one that is able to put out more volts?

Because with the lowered output at stoplights - all the internal electronics slow down or dim (wipers/air blower/lights).

Or should I just get a regular battery with some type of capacitor that will kick in during stoplights and prevent the battery from being drained.

Any suggestions are greatly appreciated.

Click to read more...

 

[ahole-ic]

I have a 200AMP High Output Alternator in my 2004 Impala 3.4L.
As with many of these units, when the car is at idle (stoplights etc) the output drops.

I have had a regular battery in the car for 2+ years, and I believe it is close to the end of its life.

When I replace this battery - I want to put a battery in that is designed for this type of situation.

One that is designed for charge/discharge many times, and perhaps one that is able to put out more volts?

Because with the lowered output at stoplights - all the internal electronics slow down or dim (wipers/air blower/lights).

Or should I just get a regular battery with some type of capacitor that will kick in during stoplights and prevent the battery from being drained.

Any suggestions are greatly appreciated.

Despite what you may think, it is NOT normal for the voltage to drop at idle. That is a BAD alternator. You need to send that back.