What Is the Full Charge Voltage for a Thunderbolt AGM Battery?
The full charge voltage for a Thunderbolt AGM battery is 12.8V to 13.2V at rest, or 14.4V to 14.8V while charging. But here’s what most battery users miss: voltage alone doesn’t guarantee peak performance. AGM (Absorbent Glass Mat) batteries, like Thunderbolt’s premium models, demand precise voltage control to avoid undercharging or damaging overvoltage. You might … Read more