New Battery Issues
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Pit Crew
Joined: Feb 2006
Posts: 227
Likes: 0
From: Wi
after reading last few posts.
you can put a Amp meter between battery + and the + cable to see what (if any) current draw there is when vehicle of off. fyi, when a rfid key gets close the system will recognize it and you'll see some mA flowing. if you see more than a few mA with no key around then something is pulling power.
as for low temp (10F) issue, sounds like the battery has bad chemistry what brand bat is it?
you can put a Amp meter between battery + and the + cable to see what (if any) current draw there is when vehicle of off. fyi, when a rfid key gets close the system will recognize it and you'll see some mA flowing. if you see more than a few mA with no key around then something is pulling power.
as for low temp (10F) issue, sounds like the battery has bad chemistry what brand bat is it?
thanks for your feed back
Rookie
Joined: Sep 2014
Posts: 64
Likes: 1
From: NJ
Just had a free AAA diagnostic done and the battery seemed ok. It’s about 4 years old. Same issue as the earlier posters. Lights on for maybe 5 min while vacuuming. Is he optima still holding up? Should I get the paid diagnostics? Seems like spending 130 or so for a test only to have the battery be the culprit is a waste. Thanks for your input!
Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
Is the battery equal spec. direct replacement? When cold, cranking current decreases. Double check the CCA rating of the battery. In cold weather V8 engine is easier to start. Sluggish cranking is definitely indication of lack of enough juice from the battery assuming all the connections including ground strap is good. I live up in Alberta, cold temp. could be as low as -30F. We always keep an eye on our batteries in the winter.
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