Rick's Free Auto Repair Advice

Posts Tagged: battery sulfation

Sulfation in lead acid batteries

Battery sulfation and battery life Battery sulfation is the #1 cause of car battery failure and the most common cause of sulfation is severe discharge and long period of non-use. What is battery sulfation? When a lead-acid battery sits in a discharged state, whether due to leaving lights on all night or leaving your vehicle unused for long periods of time, the lead plates develop a coating of lead sulfate. The longer the battery sits unused in this state, the more the plates accumulate lead sulfate. And, the deeper the … Read More

What causes battery sulfation?

Battery sulfation definition and prevention What causes car battery sulfation? • Deep discharge—like leaving your lights on overnight • Self-discharge—all lead acid batteries self-discharge about 1-2% per day, depending on the storage temperature (faster in higher heat). • Long periods of discharge— The longer you leave a battery in a discharged state, the more the sulfation process becomes a problem. • Faulty charging system—If the alternator isn’t working in your car, you’ll draw more power from the battery than you’re returning. That will cause sulfation. How does a battery sulfation … Read More

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