alternator charging and battery holding charge...

Avoidin Deer

Zoom Zoom, baby
Contributor
L
Central Virginia
V
2019 CX-5 Reserve
That's a pretty cool accessory.
Nothing like a voltmeter.

I was just lamenting the lack of gauges modern cars [don't] come with.
 
V
2016.5 CX-5 GT AWD titanium/black 2016 Miata Club ST MT white
I can see that the alternator is charging but how is it that you know that the battery is holding a charge? After you turn the car off I assume?
 
V
2017 CX-5 AWD GT with TECH package
I can see that the alternator is charging but how is it that you know that the battery is holding a charge? After you turn the car off I assume?
if the battery is not holding the charge, chances are you might not be able to start your engine in the morning and or you can tell the starter in not that powerful, after parked all night.
 
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CX-5 Sport 16.5 6M
I have a 12v meter that just plugs in but. I like the one in the photo. Where was it purchased?

Usually the numbers to look for are 13.8 for running voltage and 12.6 for the resting voltage but the resting voltage can sag in cold weather without indicating a bad battery.
 
V
2017 CX-5 AWD GT with TECH package
I have a 12v meter that just plugs in but. I like the one in the photo. Where was it purchased?

Usually the numbers to look for are 13.8 for running voltage and 12.6 for the resting voltage but the resting voltage can sag in cold weather without indicating a bad battery.
bought from Amazon
 
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