How Many Milliamps Will Drain a Car Battery? Explore Parasitic Draw Effects
In newer cars, the typical parasitic draw is 50 to 85 milliamps. Older cars usually draw less than 50 milliamps. A draw above these levels is excessive and leads to battery stress. This excessive drain shortens battery life and causes quicker discharges. A draw exceeding 50 milliamps can cause a sluggish battery or, if left … Read more