HELP! Battery/electrical issue - car keeps dying.

jchammond

Could be corroded cables, or a poor ground connection.
Are you checking voltage on battery,when the problem occurs?
Fully charged battery should read 12.60 volts; even after sitting a few days,,,there are some modules that may be staying awake & draining battery.
Just unsure if it’s dropping in the 11’s,10,9,etc...
Could have a leaking diode in alternator or other substantial parasitic drain.
Oem battery is a lead acid battery & can corrode terminals; Optima batteries are AGM & do not corrode at the terminals....if corrosion is present/ it’s from the previous battery & was not fully cleaned.
That would be my 1st starting place-remove cables & clean internally w/wire scrubber,pocket knife or large diameter round file....then clean external part with wire brush.
Hope this helps & check charging system as well.

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