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Home >> Porsche >> 1987 >> 911 Turbo Targa F6-3299cc 3.3L SOHC Turbo >> Repair and Diagnosis >> Starting and Charging >> Technical Service Bulletins >> By Symptom >> Customer Interest >> Battery - Diagnosing a Discharging Condition >> 5. Discharged Battery >> 5.2 Discharged and Sulfated Batteries
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5.2 Discharged and Sulfated Batteries

A discharged battery can be recognized by low electrolyte density (one or more cells) and no starting capability. Sometimes the battery can be saved. Because of the high internal resistance for regeneration, a higher charging voltage with a current limit of maximum 2 amps is necessary.
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