Selecting the right battery capacity depends on several key factors:
As a general rule, larger capacity (mAh) means longer flight times but also adds weight. For example, a typical 2200mAh 4S LiPo battery might give 15-20 minutes of flight time on a medium-sized drone. According to IEEE Spectrum, most commercial drones use batteries ranging from 2000-5000mAh.
To calculate your needs, consider that every 100g of drone weight typically requires 25-30W of power. Choose a battery that balances weight and capacity for your specific use case.