Convert energy from watt-hours (Wh) to charge capacity in milliamp-hours (mAh). Useful for understanding power bank capacity relative to your device's voltage.
Yes, most airlines allow batteries up to 100Wh in carry-on luggage. This calculator helps you check if your battery fits that limit.
It is usually printed on the battery label. Common values are 3.7V for phones/power banks, 11.1V or 14.8V for laptops.
mAh = (Wh * 1000) / V