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Discussion Starter · #1 ·
Just got my 250amp alternator with big 3 upgrade to 0ga done. I noticed that when I shut the truck off I can hear the battery making kinda a fizzing sound...... battery doesn't feel hot but I can hear it coming from the lil foam holes on top of my red top optima.... should it be doing this?
 

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Wanna B Jack o all Trades
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have you done a voltage check?
 

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Discussion Starter · #6 ·
had shop test everything and they said voltage was great and it definately was not overcharging so I really dont know what the deal is. Gonna keep an eye on it for awhile
 
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