Flight Standards Information System (FSIMS)

To calculate the number of watt-hours a battery provides, divide the milliamp hours (mAh) by 1000 and multiply the amount of voltage (V) (e.g., 5400 mAh/1000 x 11.1V = 60 Wh). If unsure of the watt-hour rating of a battery, contact the manufacturer. Lithium Battery Testing. ................
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